Best Of

He's another of the game's over 100 mid-tier champions.
There are at least two every month. I think we may never again see a champion who's useful in every scenario. The focus has increasingly been on champions for extremely specific scenarios or focused on specific defenders.
He's more of a counter to Onslaught and mutants in general. I'd say he was specifically designed for Captain Britain and her Neuroshocks.
He'll be a reasonable defender; it seems the cosmic ones handle him without any major issues.
Unfortunately, all the versatile champions have fallen victim to Rarity Lock: Kate Bishop, Hulkling, Hercules, Magik, Quake, Ghost, Valkyrie, Scorpion, Absorbing Man...
There's no point in expecting anything like this from new champions. Not every champion needs to be versatile or extremely good on offense. But I got the feeling his rotation is very slow. I didn't feel like using him at all.

What I don't understand they keep dropping mid attackers but op defenders with a huge list to their abilities. It feels unbalanced.

I think this is more perception than reality. There’s a lot of attackers released designed to counter meta defenders and vice versa a lot of defenders designed to be very difficult to beat without specific counters, but a defender that only a few attackers can easily take down is considered OP while an attacker that only shines against a few defenders is considered mid. This seems asymmetric and biased towards defenders, but its essentially two sides of the same design coin.

I also think there’s a greater emphasis on damage output among a lot of the community than there is among the champion designers. Again, the current design philosophy tends to focus on threats and counters, and less on speed. Damage output plays a role in the value of a champion as designed, but it is just one. It tends to feel like more than half the focus of evaluations on the player side of the fence. Battlegrounds probably plays a significant role here, but to be frank its difficult to solely blame BG for this when this bias has existed every day of the existence of the game.