Well that’s the issue. Raiding needs some modernizing.
And that would mean to do a bunch of stuff. Like lowering the requirement for participation 8-10 man minimum would do wonders. No more realm restrictions on mythic raiding. Cross faction guilds. Making wings instead of full raids like ff. Making guilds more community based, instead of ol-fashioned server based and something you can do cross realm/server group.
If you want to make them repeatable could add a timer based mode like mythic plus but for wings. 3 bosses with a timer. Like mythic plus. Basically making 15-40 minute fights like mythic plus. With one random loot from all 3 raid bosses. Better hope no one dcs xD