Poly is our favorite resort and i'm having mixed feelings on this. The idea of DVC at Poly doesn't bother me a whole lot, but the idea of having 5-story buildings on property does. It would totally ruin the charm of Poly and IMO stick out like a sore thumb. I agree, the Poly needs to be updated - especially the GCH. It has a lot of character and can be updated without ruining the atmosphere. I love the Volcano pool but the idea of a bigger and better pool also appeals to me.
As for the monorail, I guess I've been lucky because I haven't had to deal with a lot of monorail overcrowding but then again, I go at times that it's typically not as busy even if it means taking my kids out of school. And the biggest reason we go when there are less crowds is because my health issues. I need to go when it's most convenient for me. I wonder how many people get on the resort monorails just to ride around the resorts or because they don't want to take the express one from MK to TTC. The only time I've really dealt with monorail overcrowding is leaving a park when it's closing.