I agree wholeheartedly with everything Big Phil said and my first choice would be to keep the Snow White ride. However, since Disney has announced that this won't happen, I think eventually having another classic dark ride in that building would be MUCH more preferable to using such a prime attraction location for a meet and greet, and would help take away some of the sting from losing Snow White.
Pinocchio's Daring Journey is my first choice, if Snow White leaves. This is my favorite of the DL Fantasyland dark rides, and my second favorite Disney animated film. The characters, story, and music are timeless and IMO deserve better representation in the MK than just the Village Haus restaurant. The relative close proximity to Village Haus would also make this a great choice.
Alice In Wonderland and a reborn Mr. Toad's Wild Ride are my second and third choices.
If they would rather go in the direction of an Animated Classic that has never had a dark ride in a Disney Park before, I can think of several I'd enjoy, including but not limited to:
(Listed in order of film's release)
Mickey and the Beanstalk (segment from "Fun and Fancy Free" that the neighboring "Sir Mickey's" gift shop is already themed to!)
Cinderella
Sleeping Beauty
101 Dalmatians
Sword In the Stone
Mary Poppins
Beauty and the Beast
Aladdin
Princess and the Frog
Tangled
Obviously, there are several others I did not mention that I would also love, such as Lady and the Tramp, Jungle Book, The Rescuers, etc., although I'm not sure how they would fit with the more "royal", European, storybook vibe of Fantasyland.