I don't have anything against "screens" in rides, I loved the old rides with 16mm/35mm film projection screens "If you had Wings", "Horizons", "Journey into Imagination"... and "Soarin'" is an Imax screen.
What I liked about those effects is just the fact that you didn't see them in everyday life, it's something you could only really see in WDW, but the new Mermaid scenes on the HDTVs seem a little under whelming to me, only because I an HDTV in my living room, and there's no real mystery to how it was done, so those effects aren't so special to me personally
That being said though I don't know how they would make an animatronic Ariel and Eric kiss, because Ben Franklin and Mark Twain at the end of the American Adventure don't quite manage to shake hands, and they're much further away from the audience than the Mermaid AAs
I agree.
The great 360 circle-vision, or large screens in some Epcot pavilions, and in the screen in Soarin' is out of most people's everyday experience, it is something that takes it to the next level.
Also, screens don't look too bad in Epcot/Tomorrowland as screens are part of the future. But I think why the screens look odd, (at least to me) in Mermaid is because classic Fantasyland attractions most happened in the past, certainly before television screens, so I think that is why the screens look out of place in Mermaid. Whenever I see the "transformation to a human" screen, I immediately imagine a big LED television behind the fake rocks, sort of takes me out of Ariel's time.
I think you are right in that it would be hard to have two animatronics kiss, the "Kiss the Girl" scene doesn't need this as they only come close to kissing. But, in the movie, don't Ariel and Eric kiss on the ship, not in some little palace or something? I think in the film Ariel kisses Eric a couple seconds too late, and turns into a Mermaid, not that she kisses him and instantly gets her voice back, which is what is implied.
I think the paper cut-out Ursula/silhouette kissing scene should be replaced with something similar to the scene on the boat, Ursula "crawling" along the deck at Eric, Ariel, have King Triton in the background, or maybe one of Ariel/Eric dancing in his castle or something, with a side scene of Sebastian being chased by the knife welding chef.
Then maybe as the last scene have the wedding part on the boat, you don't exactly need to have Ursula blowing up, IMHO. Eric's boat is a big part of the film, but isn't in the ride anywhere, and MK's LM didn't use it as part of the queue, which would have been my idea, more iconic than Eric's castle, IMHO.