I've recently completed a rewatch of the series. Or a full watch as I didn't watch every episode during its run. My opinion of the series has only changed slightly. I already knew the first 2 seasons sucked and it got better from Season 3 but I must admit I grew genuinely fond of some of the characters and I think the series overall had some classic episodes. It's a deeply flawed and badly executed series with far too much filler and pointless fan wankery but I'd be lying if I said I don't have some affection for it.
What I liked
Archer grew on me.
I liked T'Pol first time around and I like her even more on rewatch.
Trip is still the best character.
Phlox is a good addition.
Hoshi is sweet if underused.
Shran is amazing.
Porthos is adorable.
The NX-01 is great.
The Xindi arc was well done.
Season 4 had some great stuff.
What I didn't like
Season 1 and 2 apart from a few episodes.
Trip's death.
Reed. Completely unlikable.
Travis. Bad actor playing a bland character. Took me until Season 3 to memorize his name.
Too many boring episodes and needless callbacks to stuff like the Organians.
The finale!!!!!
What I liked
Archer grew on me.
I liked T'Pol first time around and I like her even more on rewatch.
Trip is still the best character.
Phlox is a good addition.
Hoshi is sweet if underused.
Shran is amazing.
Porthos is adorable.
The NX-01 is great.
The Xindi arc was well done.
Season 4 had some great stuff.
What I didn't like
Season 1 and 2 apart from a few episodes.
Trip's death.
Reed. Completely unlikable.
Travis. Bad actor playing a bland character. Took me until Season 3 to memorize his name.
Too many boring episodes and needless callbacks to stuff like the Organians.
The finale!!!!!