Not sure about imbalanced, but Mew is pretty potent right now along with general priority power. But I agree, the meta seems pretty balanced, I see multiple different mons every match with only a few common ones, but nothings OU except maybe Cloyster, but it usual set is easily defeated.This OM is quite balanced in itself at the moment. That's probably why there are so few messages here, nobody is complaining. But for how long?
Have you guys found some imbalanced Pokemons (or pokemon with specific types)?
Also, I wanted to share this cause I see Orbeetle as very underwhelming usually but it basically won me this battle:
Love Camomons, one of my fav OM's.