Class D amps seem poised to take over. Then what?

Class D has definitely come along way.  From my thinking it really has just made its way to be able to compete with A, A/B and the other variants. 
I believe that we can finally believe it when someone says "its that good". ,   but we will still always have good Class A, A/B amps to consider.  Class D is no different than the others now.  A good design along with good parts make a nice amplifier.  
We finally just have another product to consider at any budget looking for bang for the buck or recently, even to compete with the best. 
You never know,  maybe Ralph @atmasphere  will design a switching tube amplifier. Ha

If you think class d is better than class a or class a b you better get your ears checked LOL they've gotten a lot better but they're still not as good.

When someone tells me that both Nelson Pass and Steve Deckert are now designing exclusively in Class D, I will consider more.  Until then I have 2 class D's and that is more than enough.  Love the operating temperature of class D.  Oh yea, I also love the operating temperature. 

I sold my Pioneer 70 D class amp. And recently listened Marantz Reference Series PM-10. All Class D amps have power and clean sound but lack of richness and soundstage.

I got my AGD class Ds just in time for 116 degrees here in Portland!
FWIW, these Class Ds are different from others.