Yeah, I've found the new engine to be a bit.... lolwut?
It's washed out and lacking in detail, the crispness of the old engine worked well, sunlight glinted off metallic surfaces nicely, whereas this actually looks more like a "game" rather than what it used to look like. And I've not managed to destroy any buildings yet, or parts of, or seen anyone else do it... not sure what's up with that?
Brit tanks are probably a massive disappointment all round, to be honest. They didn't make it at all clear in the devblogs what the situation would be with these tanks, I think people wouldn't have minded quite so much if they'd been just ordinary premiums, but an additional £57 just for 4 tanks? How about... NO. (I'd be less polite, but it'd just be a stream of *'s on this forum)
Shame, because the game had so much potential before the greedy marketing dept got hold of it.