You are comparing to a unit that is overperforming and trying to make another unit competitive against that...
Fussies will either be OP for cost or UP compared to volks. While volks performance is as it is (by that I mean a no Brainer unit that can do everything leaving no real room for any other unit to compete)
I say again, this is a volks problem more than it is a fussi problem and I'm not sure a 10mp increase is going to fix thr volume of problems that volks in their current state create with balance.
Volks arent op. They trade a fast powerspike through stg with a weaker scaling. Sure they are cost efficient but not op. The thing that made them so strong was the high mp available to okw at the start and their cheap cost. They were easy to spam and let okw snowball through the early game. That gets corrected in this balance patch already. No need to punish underperforming pfs even further. Just make them like penals. Higher cost, better performance.