I"m sorry to hear about all of ya'lls losing streaks. I had no problem rolling up most of my doubles on my first game yesterday. After that I mostly played my arty and IS-4. Ended 5-3 on my IS-4, with 2 steel walls and 1 top gun. Also one of those losses, I got DCed in the middle of the game since my graphics driver crashed (guess I was OCing it a little too hard).
I'm really liking the IS-4. The HP of an E-100, smaller, faster, just as bouncy (even more really), really nice pen, fast reload. Against tier 8s the tank is invincible. One of my games was 1 tier 10, 1 tier 9, rest 6-8s and only 1 arty. I bullied all the enemy tanks, and they couldn't do anything about it, except maybe track me. Funny thing was, the tank I was most scared of was the KV-2 with the derp, but he missed me. It definately seems that alot of the IS-4 drivers out yesterday also didn't have a clue how to drive thier tanks. Made for some really easy kills for me.
As for the other new tanks, the IS8 is really squishy. I can pen the direct front of it (not the lower glacias) with the IS4. In addition I had 2 IS8s try to face hug my IS7, which was a bad move by them. The IS8 has a viewport that sticks out the top, easy shot at face huggin range for full damage. I also played a game with the KV-2 and the derp. Took 3 shots, but I killed an IS8 (had a little help also) with it. I got 2 shots in for over 500 which made me happy, while the first only hit for around ~150. I also dont remember the KV being as slow as the KV-2, but it had been awhile since I've played it.
The new maps are interesting, but I only got to play each one once. So I will reserve any comments about those till I get some more games in on each one.