Global rating to be the average of x1, x2, x3, x4

I suggest the global rating be the average of the other x1, x2, x3, x4 ratings. It's hard to maintain the rating having to play x1, x2, x3, x4 and still global

A lot of people only play global so that doesn’t work. There’s already a modifier where if you don’t have a lot of games then playing tmm gets you global points to a point

The only rating you would have to "maintain" is global to get into certain lobbies? The matchmaker ratings don't exactly open up new opportunities for things, besides tournaments potentially being restricted by them.