Are any of these worth an awakening gem ?

If you're not Paragon yet, Ultron and straight to sig 200, best Superior Kang counter by far imo. If you are Paragon already, either Nimrod or Rintrah.

Shake_a_Quake

It's been long since I've seen a 6 star Longshot. Do you have an idea of how astoundingly quick he melts the opponent with his bad karma damage on SPs? It's like the healthbar just becomes a jokez and it's quite a fun treat to watch too. You'll love Longshot, I hope.

Or else, go for Tigra, Bishop, Ultron, Juggs, Galan....