I think it's in effect. The health buff for the siege towers seems to be in and is a big + Large tower is much tougher, the rooskies are going to love that land ship even more now
The only other suggestion I have would be a slight buff to catapult power. The large siege tower now takes 9 direct hits before going down. I believe it went down to 4-5 before. I think the catapult is a pretty good counter to the siege towers, it's not extremely accurate... well maybe it is... but it's slow and you need to find range before you start really scoring hits, so I don't think it's too silly to buff it a bit. I guess the thing to really consider though is how much it would debuff the walls...