I've personally toyed with just about every form of D&D in some fashion, though my usual crowd for online games rests squarely in the 3e/PF1e Venn Diagram slot. Overall I've never found an edition I didn't enjoy, though some definitely would need some tweaking before I'd ever run them. 

As for comparing 4e to things: I always thought it reminded me more of something like XCOM or other turn-based tactics games rather than any sort of MMO. Cooldowns on abilities have always been a thing in D&D, 4e just made them more obvious and in the spotlight. I've always said that I'd love to salvage the core engine and then reuse it for something like a military squad tactics RPG.