For myself, and probably others, I just think I have such a strong skepticism of anything that goes on at WDW these days, that it's tough to get excited over something with still so much uncertainty. For a few reasons, really:
1) A part of me doesn't necessarily believe this will happen, that budgets will be slashed, and the end we will end up with another half-hearted, value engineered, soulless land like FLE (oooh, an idea...Could the refurb at DHS include a giant portait of Dan Cockerell like the one Phil got?!). You have to admit, neither TDO nor WDI has a really good track record in Florida in the last 10 years. Execution is crucial, nothing is a sure bet. And another drawn out 5 or 6 year construction timeline seems crazy.
2) As wonderful as a major overhaul of DHS might be, is it going to fix things that desperately need help like GMR or Fantasmic? Or even the rest of WDW? What about the fact that all 3 other parks still have major issues in terms of upkeep of attractions/entertainment? The completely outdated CoP at the MK or the terrible Stitch show, or Ellen or EO or RoE in Epcot, or broken Yetis at DAK. Or one of the multitude of other small (poor entertainment) and large (monorail and other transport infrastructure) problems the resort faces?
I'm cautiously optomistic, but again, the track record of hits and misses at WDW in recent years speaks for itself.