If only the ride could be 100% better. It looks like we will have a superb queue line for a so-so attraction--which I fear will mean this gorgeous queue line will seldom be appreciated. Of course, given how much they are touting this attraction and the fact that it (unnecessarily) has Fastpass, the waits should be artificially long for a while. I'm still hoping for some good updates to this ride over DCA's but most reports suggest any updates will be pretty minor.
The queue is gorgeous however.
The queue will help the ride as in DCA you don't really feel your going into Ariel's world until a little bit into the ride.
Having said that, DCA's LM is pretty lackluster, nothing on the scale of Pirates, yet also lacking the "warmth" I guess you would call it of Peter Pan, its more of a musical review with audioanimatronics and scenes from the film. With Peter Pan you sorta feel like you are traveling to Neverland, with Little Mermaid its more like scenes are presented for your viewing.
The good news is that LM could become a great ride. The animatronic Ariels are great, but their so close to the clam shell that you notice all the seams and plasticky nature of them, the auctioneer in Pirates isn't up close to the boats, and I think Ariel would look more real if there was more space between her and the guests. Ursula is a technological advance, but you're so close to her, you don't get the feel of being in her underground lair and you notice how she is artificial.
Plus, at DCA anyway, a lot of the fish are just plastic things glued onto the walls, I don't see why they couldn't give them a little movement. Plus DCA's LM final couple scenes are an embarrassment in DCA. The good news part is that MK could fix these things with larger sets and expanded scenes, and removing the phony paper cut out Ursula.
I kinda think they will make these changes, why not? MK is competing with Potterland, DCA was just trying to cram a ride, any ride, into a small little space. I know people say LM's show building is the same size as the one in DCA, but given that they kept a wall from 20,000's showbuilding, it is not new construction, just a retrofit so adding show-space wouldn't be that big of a deal, especially if they removed the extra space for castmembers in back.