Tribes will not have +100% manpower under the new system, the modifiers were adjusted.
Looking forward to that - hope it's still more significant than the 112.5% -> 125% we get currently.
Edit: Wait, if the autonomy-negation also worked for hordes with their autonomy floor, the horde govt +50% manpower would already cause manpower to bounce to 150%..
Humanist takes a hit because one of its ~special powers~ is it allows nations with +tolerance heathens to be able to avoid rebelspawn without lowering autonomy even with almost constant 100% OE, which under old system was pretty much a 2x increase in province utility for freshly conquered provinces. If you can raise autonomy and shove most of freshly conquered land into the proper estate it really lowers the relative power of humanist.
I know you mean raise autonomy, and mm, I suppose so, though you would still benefit from e.g. extra manpower and tax in a Burgher province.