One of the changes by Seble was to slow down player improvement. The goal is for players to cap out during their SR season (vs JR season).
But since we didnt run enough test seasons I don't think we know if this improvement rate was slowed down too much.
I suggest the 2 game/day owners play attention to this since their players will eventually become SRs 1st and note/post if they think the rate was slowed down too much.