Put simply, you don't seem to understand the purpose of raiding. It exists to challenge players to the fullest extent. If you want to run "somewhat tricky and fun content" raiding isn't what you're looking for. Unfortunately, there really isn't content in this game that is actually suited to what you're looking for, but I believe you would anger more players by reducing raiding to that than you would attract with such a change. It'd be more appropriate to introduce a new type of content or a new difficulty of raid than it would be to reduce the difficulty of the only content in the game that provides a challenge for the players who want that challenge.
As for the effect of nerfing content quickly, such as the idea of nerfing Midas in 3.3, I've already explained why that wouldn't do anything besides frustrate the remaining raid scene. Personally, I might quit if A8S gets nerfed before I complete the fight, because it's frustrating knowing that I can do it but SE would rather take away from the fight because the clear rates are "low" even when I haven't had ample time to finish it yet. And I know a lot of other people feel this way. There would no longer be a place for players like myself in this game, who typically finish a tier about a month after the odd patch that follows it.
Then Midas (Savage) should be fine as well for your group. This is the same sort of difficulty level we saw back in Final Coil outside of A8S, and that's still not so difficult that a group that found Coil to be perfect couldn't clear it with some time and effort.