Zardnaar
Legend
Popular stuff often are half heartedly designed if they don't line up with the conservative view in D&D and many RPGs.
If you are lucky, it's accidentally good like druid. Or accidentally mid like artificer.
But most of the time you get monkified or sorcererized. Something non-traditional designed bad or boring that takes almost a decade to be fixed.
Had a similar thought low. Often they design for previous edition metrics. But that changes.
Eg 3.0 rogue is great in 2E.
Monk in old D&D with abundance of loot wasn't t bad. High rolled stats.
I also suspect late cycle stuff has smaller print runs. Secondary market book prices can be high d say UA or Xanathars.
So online people think Bo9S for example is great. In reality very few people comparatively saw it let alone used it.
Fizbabs. Bought it never had a player consider a Dragonborn from it. Theros Ravnica etc barely used it.
Complete Mage. Psion, PHB2. Barely used.
Most of my 2E material....... Barely used.
I could probably cut my 3E books down to 10 or so vs 50 or 60. 5E could be cut back to 5.
I've commented on thoughts I had 2002 about how forums talked about 3.0 vs what I saw at RPG groups.
So what we the hard core enjoy nit picking about here has virtually no relevance out in the real world.
It's one reason why I think 3.X survived longer than 4E. It fixed 3E in ways the vast majority weren't experiencing anyway.
So basically I think the majority of the player base edition in and out are casuals level 1-7 mostly after generic fantasy tropes familiar from myth and legends.
So new conservatism may be 5.0. I suspect 5.5 will have 2E trajectory. Could be wrong
So I have to hats I would where if I made a genies wish. There's what I would command them to make for me personally vs what I would command them to make the most money.