so instead people will be declined from groups for not having the optimal ability. good choice. rather than let people change so that they have a better chance of enjoying the game, make them feel discriminated against just like all the people who refuse to make a group for m+ and get declined because their RIO is too low.
you see RIO and the hate it gets? that is what permanent choices are. those people can’t get into a group because of a bad system and choose to not do what is within their own power to better the score. instead they feel hated and become toxic idiots on this forum.
THAT is the system you want.