I know this is not a thread about Rose Tico, let alone TLJ, but since the inexcusable behaviour and harassment displayed by this vocal group of assholes is an escalation of their conviction that her part – and everything surrounding it – should not have been part of their Star Wars. So I cannot help it, and I have to point out that, to me, Kelly Marie Tran's is amazing and her part in TLJ is something I very much cherish.
First off, the detour itself is an essential scene for TLJ – it gave us a literal detour to show us more of the galaxy. More of the galaxy that we're supposed to care about, and more of the galaxy outside the bubble of the Empire/FO and the Rebels/Resistance, and more of the galaxy that is unusual to see. More emotionally, more visually. It even gave us Mark Hamil's best cameo to date. One thing I had actually liked about the prequels is that they showed more, whereas the original trilogy only had the Cloud City to offer, and even that was quickly turned into more corridors for the story to take place. We barely got any sense of how people lived in that galaxy at large. Plotwise, it was also the essential wild goose chase that was an integral part of the moral of the story; although that was too dark for me to genuinely like.
Rose Tico did more, she showed us the people from the lower decks, and more than that – one of the many of who seemed to be coming from yet another part of the larger world Canto Bight gave us a glimpse of. All we've been given so far are heroes, villains, royalties, etc. as all the people doing work behind the scenes for the Rebellion or Resistance were relegated to background people who can randomly die. TFA murdered a whole village, but you can't say anything about the villagers besides that they were murdered. Could have some of them been star map drafters working against the FO with von Sydow's character? You can't really tell. A glaring omission, because if someone is with the Resistance, they are literally risking their life even if they are the person who cleans the toilets, so the very fact that they are on board means that they are seriously committed to changing the galaxy. And Rose Tico came to fill that gap.
She's also the perfect counterpart to Finn, who first serve to humanise and give face to the Storm Troopers, who had so far been a faceless nameless enemy with no particular story. OK, we do know some of them were a bunch of Jango Fetts, but other than that.
So unlike these folks that attacked her personally, I can't wait for her appearance in the next Star Wars, and I hope she has a larger role to play, counter to all that uncalled for crap that got dumped on her.