i think they need to make the barrier to entry to raiding especially mythic raiding much easier. Compare savage raids to mythic, savage can be done one night a week for a few weeks to clear in a reasonable rate. A comparable mythic guild will raid 3-4 nights per week, farm m+ outside those, clear normal/heroic for loot, do boost runs for guild feasts/mats and gold, this wouldnt even be considered hardcore raiding by most in the mythic community. I think the days of the playerbase being willing to sacrifice 3-4 nights a week every week for potentially months are long gone, the challenge should be killing the boss not all the other crap outside that, it burns players out.
What if heroic and mythic dropped the same iLV but mythic gear had bonuses when worn in raids, similar to how pvp gear can scale. Add more cosmetic options to mythic, reduce the barriers to entry and make mythic raiding more concise high difficulty boss challenges to test players rather than the bloated mess it is today. Mythic could drop gear 50 i lv higher than m+ and it would still be dying, people just dont enjoy the requirements around mythic raiding vs m+ and other content