Actually, the fact that I would've had to run these trash infested, timed, boring ass trashfests called mythics+ was the main reason I refrained from getting back into raiding again, having to actually waste my time on them to gear.
They should drop lower gearlvl than raids yes, that's the whole point of raiding. Heck, even "Forcing" people into extra 10mans in WotLK was better design than having raiders or aspiring raiders having to do something else entirely which they might actually hate to do, aka mythic+. Mythic+ is so far away from typical raiding that is should truly be a seperate path to gear, distanced from raiding like PVP is, not be a supplement to raid.