Ya here's what I have to say:
1) 20K was dead way before Pooh took over that spot
2) 20K ain't ever comin' back
3) Pooh is a huge Guest pleaser
4) Guests have been requesting a new play areas for years, just because we the Disney nerds have not does not mean to majority of families haven't been asking for something like this
5) What did you see when you were there and other guests were there as well? Smiling faces on the kids, parents that looked happy to have a little break?
The Magic Kingdom and WDW as a whole just doesn't need a new big Eitcket, each park just got something new on 05.05.05, DAK being the exception because of Everest. The market is not in need of a big push like a new Eitcket at MK.
If Pooh's Spot is still there in 6 years then maybe we can start getting bent out of shape over it.
Right now it is a nice spot allowing kids that cannot go on some of the rides just yet to have a little place all their own.