IMO, I wish they'd give it time to breathe a little. Most parents of young ones that I speak to, myself included, are sick to death of Frozen. I'm suffering from a massive Frozen Backlash.
Avatar is the current highest grossing film in history, and most folks around here hate the idea of that as well and complain that it is no longer relevant (was just having that discussion in another thread) and ask why Disney would choose that film as a massive investment for one of their parks.
Personally I wish they would wait 1-2 years for an investment in a Frozen attraction, and if it still is a beloved film, then investing in it properly.