Play on lower tiers. I've only seen an IS-3 once in the entire time I've been playing so far.
My main concern comes from invisible tanks thanks to the poor camo system.
Still, there are days where everything works, and you have that perfect game, and your 50 tonnes of clanking military porn punches through an unprotected flank and rapes the opposing teams artie and it feels good man.
I'm really going to miss my S35 Somua though, because I'm sure as hell not actually giving these people money. We'll meet again though, one day, when the French Tanks are finished and implemented, we'll meet again.