It looks like if you go lvl 75 and then get the special levels above that, then you will get like a double BIA crew. This gives you a huge advantage above anyone that just plays multiple tanks.
Its a huge advantage because in old days you only needed 3-4 skill crew and you pretty much were like 90% as strong as people with 7 skill crews, now the difference will be much bigger. But there is a easy fix for that.
You can have for example an russian medium commander and play K-91 (Sniper), Obj. 140 (Allrounder) and 430U (Brawler) and have a super strong crew on it. Combine that with T44-100 (Tier 8 credit grinder) and T34-85 (Tier 6 godlike stat-padding).
Switch bettween them until you get millions of exp over months to get the highest crew ranks and make your crew more OP. (Even if its just a few %)
Compare that to someone who drives 3 tanks from different countrys with maybe lvl 40 commanders.
Source: https://www.reddit.com/r/WorldofTanks/comments/luayfq/with_crew_20_you_should_only_drive_one_crew/
