God fucking damn it.
Problem is, we will need to be at, like, 10+ wealth to afford doing anything. We straight up won't be able to do a quick army raise.
Mercenary companies will cost double, so all the people who want more companies (me included) can go suck it for the foreseeable future.
So we are left with our pants down Martial-wise and Naval-wise already, which is not a good thing when Steppes are right here.
Next. Doubled Mills and Academies costs mean we cannot now, realistically speaking, afford the things which actually solve the problem - those that make skilled labour respectively more useful and more widely available. It means that we are removing long-term solution to slavery from the table here - because we already cannot afford to build Mills, Academies and other skill-risers because of other commitments, we just straight up won't be building them afterwards.