I think dataminable build is all we can hope for, I doubt they would start 2 Betas one same week.
"Not as much" is big, big understatement. Nowadays we get more mounts in patch than in older expansions. And many people are into getting them all. Same with pets, toys, transmog (before Legion transmog hunting beside few specific sets you really like wasn't even a thing). Shadowlands had good idea with side activities for covenants, but a) you could have only 1 and b) it required Anima grinding, so hopefully they will iterate on stuff like this .
And good you mentioned M+, that's another HUGE thing. Before that we didn't really have "spammy" content to play for PVE, you grinded dungeons only to be prepared for raid and later it was either no point or daily reward for easy thing.
Doesn't look like world quests are going somewhere either. Remember in WoD only daily world content was few apexis "fill the bar" stuff that took forever. Now emissaries are quick, give some starter gear, chunk of rep and shit ton of gold (for that effort). Only change I hate in SL is that you have to pick and end emissary in your covenant.
So sorry, but no, game isn't like WoD at all, infinite power grind wasn't only thing that was added in Legion.