Honestly I think my biggest concern with the str to vit change is the amount of tanks I'll come across who haven't switched because they didn't read the patch notes. I've come across a fair number of players who say "I never read patch notes, I prefer discovering everything myself"... sometimes they are the same people who say "Hunh, there's an event going on? I didn't know that, where do you start?" which leads me to believe they never look at the main site.