lvl 75 milestones on waypoint

Did halo 4 not add any milestones at all? (it was lvl 75 before it came out) and then do the halo 4 achievments still count towards it if you weren’t at lvl 75 alrdy?

I think they reconfigured the milestones, mine dropped to 21 a couple times, and since has gone back to 1 a few times. 75 is the max I’m guessing, thats what I’m at. I just wish they had leaderbaords or maybe an updated milestone area.