Could’t agree with you more, very well put. In my opinion classic will never, ever be more popular than retail. Vanilla was extremely dull and boring and grindy and need i go on?
The sole reason vanilla was so popular is so damn simple. It was new. That is all it was. And the people returning will only return for the nostalgia. Who the hell would prefer that type of dull, grindy gameplay.
The only thing that i think classic will have over retail is the social aspect. Because obviously there won’t be LFG there, so people will actually have to talk to eachother to pug and do quests and so on, unlike now where you don’t have to say a single word, with a press of a button you’ve found your group and finished your dungeon. Both have their pros and cons.