What I did doesn't help really. Only difference between old one and new one is a have a better build, at level 17 though, on my new one compared to my old accounts level 22 xD

Still can't compete at level 30 though ^_^

The game just needs more balance and more weapons. But since balancing it has proven quite ineffective atm I really think they should continue adding new weapons weekly at least.... at all levels even if its just the same name with different damage rates xD

Naaah, I don't think there is too much wrong with the balance of the game right now. I'm unsure about level 30 as I can't fight there, however every build I've seen at other levels has a counter for it.
The only problem now is the exclusivity of weapons. For those who had legendary weapons before the update, they can build strong mechs because they have the legendary parts. Also those who managed to get reds to buy legendary items when they were available in the shop, have a very big advantage.
The balance of the game isn't what's wrong, it's the availability of weapons to be able to build a mech as balanced as the stronger mechs.
Also, adding in weapons to counter the problem is a baaad idea. If you think the game is already unbalanced, imagine how unbalanced the game would get if they're throwing in a new weapons every weak. If, in your eyes, they couldn't get the balance of weapons right before, how are they going to get the weapons right again and again ^_^