How could wow be improved in your opinion?
In my opinion one of the biggest problems is that everything we learned during legion was thrown out of the window, legendaries, artifacts, tier sets, all those things thrown away for no real reason.
Why not just add azerite, why must you take away everything just to replace it with something else, but not really improve the game in any real way, artifacts for one could have stayed there was no real reason to remove them, even when we absorbed the fel essence from sargeras sword it would have made just as much sense if not more that our weapons would have been empowered by it, but instead into the trash they went.
Second point, legendaries could have became essences, that you could have learned and use like a talent, kinda like the new system coming into 8.2, like you disenchant your leggos and learn it’s effect, or just become 2 new rows of talents that we didn’t get in legion and bfa, anyway there was no real reason to remove them completely, yes the grind was awful, but when you got it, the bis leggos pretty much always carried with them some very interesting and cool effect that majorly affected your rotation, that was GOOD.
Third point, tier sets, so, i am actually not that bothered by the loss of tier sets, BUT, there should be some kind of special gear that you should be able to get only in raids, tier sets were that, if you don;t intent to reintroduce them, you should think carefully about it.
Artifact power, i think artifact power should be account wide, make it harder to get if you want, but at least this way, you won;t have to regrind it on every character.
The loss of many abilities is also not appreciated, and by adding these things you would at least reduce this problem.
And that’s all i could think for now, hopefully they will improve it in 8.2 and future expansions.