What a heated topic (& rightfully so) .... no, I do not see Annual Passes ever going away, but I do see their prices going UP (& perhaps a maximum amount available per year)!
If I was a Southern California resident who could afford an Annual Pass, I would invest in one (alas, I am not). My ONLY pet peeve is that the Disneyland Resort does nothing to help Out of State Park Guests save money (not enough discounts, or special offers that Southern California residents can get); while their competitors Knott's Berry Farm, and Universal Studios Hollywood do!
I get the impression the Suit n' Ties running Disneyland / DCA do not care about Out of State Park Guests (or Park Guests coming from outside of the United States), because if they did? There would be more "special offers & discounts" marketed to encourage our visits!
Alas, it will be 2015 by the time I get back to Disneyland (hopefully, by their 60th Anniversary the rehabs will be done, new rides / attractions will be available, changes will be made to herd crowds easily through the hubs & I'll be able to pay off investing in visiting before Admission Prices go up again) ....