I was thinking of this, and what if they made a compromise for the 'savage' floors later on down the road?
Keep it in fixed parties or solo obviously, but make an "Unranked" mode, where Party KOs only send you back to the start of the floor set you are on, however your score will not be saved to the leaderboard and the trophy you can claim on floor 200 is removed, as well as maybe slightly lower chance to find pomanders of intuition.
I think this would be a fine compromise for people who just want to see the difficult stuff but don't care about score or the trophy at the end, and you can still get the mount this way but it is a little less likely.