https://www.tmz.com/2020/02/06/oscar-isaac-poe-star-wars-probably-not-returning-disney-overlords/
Article has more, but the trilogy had so many problems involving poorly or misguided character development that a romance wouldn't make a difference, which was something already TESB already did - and far better right out of the gate by introducing genuine conflict between Leia and Han... I know... "I know", too...
Never mind the OT has by far the most polished dialogue and direction, which the PT and ST both fumbled over. And to be fair, repeating that Leia/Han routine would have had even more cries and squeals of "lame rewrite", but how many people really watched the OT to see if Leia was going to bang Luke, Han, or even both? Or how they felt once realizing in RoTJ that Leia knew all along who her brother was, and enough YouTube videos cover all those kissing scenes o' glory in ANH and more tellingly in TESB. 
Kudos for Isaac to try as the most smoochy smoochy stuff was Finn and shoehorned Rose where so much of her setup was left on the cutting room floor where only seeing the deleted footage revealed a subplot of some deeper substance than what was shown on screen, but I'm also one of the few bi (or gay or straight) people out there who doesn't go to movies just to see count the number of people that are just like me* engaging in generic foreplay, plenty of other movies and even genres (typically rated NC17 or XXX) already do that so why must it be ubiquitous... oh well.
Finn easily could have had the most development in the trilogy... raised and trained to be a killer on cue but something breaks and he runs... good grief, that's HUGE. So what do the writers of all three movies do with it? Meh. Barely do the initial setup and then wander off to tick checkboxes o' plot items. No wonder Rey's spotty development and new Force features learned on cue isn't very credible (never mind TRoS that take it all so over the top. I can't blame them too much, the original trilogy didn't say much on limitations (or do much, saving anything for only those most in tune with it - and even then they couldn't do anything with a wiggle of the nose), and the prequel trilogy - despite all its problems - at least kept that in check as well. Adding new features in the same paradigm runs the risk of upending everything before it and, sorry, it is a very valid point. Reviving people from death out of the blue with Force Heal might have been nice - Luke could have regenerated Yoda for a cheap thrill. Or for an even cheaper one Yoda could have touched himself while listening to The DiVinyls... unless he was so irritated with Luke's petulance that he just wanted to diiiiiiiie to be free of the whiny whelp... so, okay, I give in, that makes narrative sense... never mind Yoda could have done Force Essence Transfer(tm) into Luke. Maybe size does matter, I dunno. So anyway, onto the next character:
Poe tries to be a resistor within the Resistance, which is actually a good idea for a twist, but only barely and the other downer is that he's responsible for pretty much having nearly the whole Resistance wiped out. That's as bad as young firm Wesley trip over a tulip in "Justice" and now everyone on the Ego planet wants to put him to death because of it. Oops, "Edo", I suppose... Anyway, the movie was on the right track with doing something new with having a dissenter (and letting someone else be the mole (DJ)) so that the dissenter himself could just be making a mistake, but given Poe wipes almost everyone out and he only gets a slap and that's about it? Granted, so few were left that they needed him so I can fathom why he wasn't slapped out of an airlock. But that's for the same reason nobody did the same thing to Dr Smith or, worse, letting Gilligan drown after shoving him off the island.
Article has more, but the trilogy had so many problems involving poorly or misguided character development that a romance wouldn't make a difference, which was something already TESB already did - and far better right out of the gate by introducing genuine conflict between Leia and Han... I know... "I know", too...
Never mind the OT has by far the most polished dialogue and direction, which the PT and ST both fumbled over. And to be fair, repeating that Leia/Han routine would have had even more cries and squeals of "lame rewrite", but how many people really watched the OT to see if Leia was going to bang Luke, Han, or even both? Or how they felt once realizing in RoTJ that Leia knew all along who her brother was, and enough YouTube videos cover all those kissing scenes o' glory in ANH and more tellingly in TESB. Kudos for Isaac to try as the most smoochy smoochy stuff was Finn and shoehorned Rose where so much of her setup was left on the cutting room floor where only seeing the deleted footage revealed a subplot of some deeper substance than what was shown on screen, but I'm also one of the few bi (or gay or straight) people out there who doesn't go to movies just to see count the number of people that are just like me* engaging in generic foreplay, plenty of other movies and even genres (typically rated NC17 or XXX) already do that so why must it be ubiquitous... oh well.* especially when 99% of the time I can't relate to them in any even remotely interesting way, nor would I date them and I'd rather date real people than fictional ones like most people want to, so it makes nary a difference. But anyway, onto the really good stuff as to why a lot of ST actors are vamoosing:
Finn easily could have had the most development in the trilogy... raised and trained to be a killer on cue but something breaks and he runs... good grief, that's HUGE. So what do the writers of all three movies do with it? Meh. Barely do the initial setup and then wander off to tick checkboxes o' plot items. No wonder Rey's spotty development and new Force features learned on cue isn't very credible (never mind TRoS that take it all so over the top. I can't blame them too much, the original trilogy didn't say much on limitations (or do much, saving anything for only those most in tune with it - and even then they couldn't do anything with a wiggle of the nose), and the prequel trilogy - despite all its problems - at least kept that in check as well. Adding new features in the same paradigm runs the risk of upending everything before it and, sorry, it is a very valid point. Reviving people from death out of the blue with Force Heal might have been nice - Luke could have regenerated Yoda for a cheap thrill. Or for an even cheaper one Yoda could have touched himself while listening to The DiVinyls... unless he was so irritated with Luke's petulance that he just wanted to diiiiiiiie to be free of the whiny whelp... so, okay, I give in, that makes narrative sense... never mind Yoda could have done Force Essence Transfer(tm) into Luke. Maybe size does matter, I dunno. So anyway, onto the next character:
Poe tries to be a resistor within the Resistance, which is actually a good idea for a twist, but only barely and the other downer is that he's responsible for pretty much having nearly the whole Resistance wiped out. That's as bad as young firm Wesley trip over a tulip in "Justice" and now everyone on the Ego planet wants to put him to death because of it. Oops, "Edo", I suppose... Anyway, the movie was on the right track with doing something new with having a dissenter (and letting someone else be the mole (DJ)) so that the dissenter himself could just be making a mistake, but given Poe wipes almost everyone out and he only gets a slap and that's about it? Granted, so few were left that they needed him so I can fathom why he wasn't slapped out of an airlock. But that's for the same reason nobody did the same thing to Dr Smith or, worse, letting Gilligan drown after shoving him off the island.
