SInce when did re-writing your product line become an industry standard? Since when did we as a customer base become so supid that we would discard $100's of dollars in working game product just to get the latest thing (what ever that is)? We play a game of immagination, any rules problems are either being dealt with by creative GM's or could be dealt with buy a supplementary pamplet. TSR can't attract new players (and sell product) to the game in numbers that sastisfy the bean counters so here is the great idea, assume that those that already own the game are chumps and force them to re-purchase it!
I'm out
As long as Paizo prints quality 3.5 product they have my business.