There are many other concerns wrt devaluation, besides limiting access to your home resort. There's limiting exchange opportunities, the likely limitations on like for like (size and number of days) for many trades, etc..
But wouldn't those effect all owners no matter how they purchased? The point I was trying to make is that, other than a (likely) higher buy in cost, there isn't anything known about the new system that distinguishes between develper and resale weeks. I don't see any reason for there to be conflict between developer and resale buyers here on TUG.