I would still buy it. I'm not a fan of tanks. The tank battles were the weakest part of the game IMO. There is NO fun factor for me at all in RO tanking. There is NOTHING you can do against a well-angled T-34, every shot will bounce off and changing position means exposing your side and certain death. A tank battle can last forever in RO, it looks more like a Pong match than anything else. I don't understand why some people love it so much.
Just give me a bolt-action rifle and I'll be happy.
That being said, I hope tanks will be in, and I'm sure they'll add them. Combined arms maps, if done right, can be a lot of fun. Leningrad is a good example. But the tanks should be there to SUPPORT the infantry, not the other way around.
A lot of infantry + a few tanks = good (Leningrad).
A lot of tanks + a few soldiers = bad (Arad).
Tanks can make the battles a lot more fun, but if Tripwire adds another huge tank-only map without improving tank combat I'll be disappointed. Keep the focus on intense infantry and combined-arms maps, please.