I did a post about QoL regarding raid some months ago
Because, I don’t like the fixed size 20, Guilds actually need 20+ in order to avoid issues when someone can’t do it, it transform the game mechanic of the game more into a chore and I know raiding has certain level of responsability due to all players time involve, however this could be improved, I don’t do Mythic since MoP because there’s a playerbase that don’t want or doesn’t reach that amount of players for a core.