To be honest, there are very, very few that I like.
Tiki Room -> Tiki Room under new management = HORRIBLE
ExtraTERROREstrial Encounter -> Stitch's Great Escape = HORRIBLE
Test Trak v. 1.0 -> Test Track v 2.0 = not horrible, but not great (i preferred the education aspect to what anti-lock brakes did, and things like that).
Journey into Imagination -> Journey into Imagination 2.0 = HORRIBLE
Living Seas -> The seas with Nemo and Friends = not horrible, but not great.
The Great Movie Ride -> Micky Minnie Runaway Railroad = Not good.
Maelstrom -> Frozen Ever After = okay..... this is one that I didn't absolutely hate. Although I hesitate to say I love it.
The only ones I really liked were the tear down and rebuilds. I.E. Horizons to Mission Space; World of Motion to Test Track. [Edit.... in retrospect, I am not sure I did entirely like those either....]
Minor updates were hit and miss. I.E. Spaceship Earth (ok), COP (ok), but PotC (awful)
I will grant that I have not seen HTH -> Guardians of the Galaxy; but I gotta say I love HTH so I am skeptical.
Bottom line.... They do not have a good track record for my tastes when then they do overlays.