I don't like this patch at all, I'm not really fussed about the visual changes as WOT to me has never been about eye candy.
I may only be imagining it but things seem to be firing from stealth completely unspotted for much much longer, I see many more big heavies parked in bushes now playing as TDs and just not getting spotted even with some high tier lights doing some fairly risky spotting runs. In fact I saw a pair of batchats get absolutely wrecked by a Black Prince both shooting from stealth and spotting them for his team, it was ridiculous.
I'm a very very handy LT player and I noticed an instant reduction in spotting ability and spotting fewer tanks doing the same sort of things as pre patch, they've definitely messed with something on this side of things, either directly or indirectly with the map changes.