Then you clearly haven’t thought this out very well.
Fairly tough ilevel requirements? Like what? The loot is only 340 and easily surpassed by Warfront/LFR gear.
If you set the ilevel requirements any higher than 320 then people wouldn’t do them but 320 is far too low for the average player to be doing Mythic in a pug … at least if they want to be successful.
The problem is for years and years WoW has bred players that can’t handle failure and feel entitled to win no matter what which is why we have nonsense like Luck of the Draw and Determination.
At some point the community needs to accept that not all content is for them or required to be completed by them and I think Mythic 0 is a perfectly logical point.