I think the rides will be good and provide much needed capacity when it rains. Food looks fine to great and I bet it gets tweaked over the next few months to one of Disney's better counter service locations. The app based ordering will be a turning point in parks and lots of locations will start using it (this might be Pandora's biggest legacy). The drinks lack logic or appeal; simple usually equals better. I expect the interactive and glowing plants to be overrated and will lead to a lot of "that's it?" comments. Merch won't move like Disney hopes.
I've always been more interested in the "outside the berm" aspects and impacts of the land. I don't think this will hit Disney's targets and we'll see that through delayed or canceled projects that people swear are green lit now. I don't think guests will make two trips to see this land (one during the day and one at night) and DAK shifts from an EMH to early afternoon park to a late afternoon to closure/EMH park due to RoL and Disney trying to sell the nighttime effects. DHS will take an attendance and profit hit but I think Disney's expecting this. I think Pandora will be a mixed bag of success and disappointments for Disney, some of which are design related, some of which are self inflicted, and some of which are due to James Cameron.
The Usual Suspects will come out and decry this better than anything done so far and specifically target Harry Potter (similar to praise for LeFou's Brew and New Fantasyland over Butterbeer and Diagon Alley). Due to the sheer number of AP's and DVC there will be lines to get into the land initially but this will all but disappear over the summer months (see Jock's and Trader Sam's for examples). I think general consensus will fall on "it looks nice, rides are fine, lacks soul" and the general public will only connect to it on a "alien planet" level. This might sound ok initially until you remember Disney's forking over money to Fox for something guests will mentally throw away.
In the end Disney's "Potter Swatter" never materialized due to factors in and out of their control.
