All right, captain america to lvl 60, I put all my l33t gear on him and my TTK is 1:40ish (I'm sitting at 2300 omegas kinda)
My main rotation is vibranium bash -> torque shield throw -> shield bounce.
I tried something I thought it would be better on the dummy by replacing tst by aerial assault and bounce by toss, but time didn't seem to change, so I dunno.
What I'm happy about is how smooth indestructible shield and patriotic soldier (challenge?) fits in the rotation; so even against the dummy, I'm shielding myself and tauting even tho I obviously don't need to.
Now, Captain is obviously my main at this point. I already thought he was fun to play before, but now he is just the GOAT hero of this game. Great damage, great survivability; 3 auras on at all times with a 4th activated by a taunt that makes sense, fun powers, serum mechanic is pointless, but it doesn't stand in the way (there's no serum management whatsoever, it doesn't even deteriorate with time like other secondary resources, so it basically sits there full forever). Great in single target, great for clearing terminals.
This is it friends.
This is our hero.
Edit: I'm using a horrible armored core without 25%hp and spirit regen and even then, I have 0 spirit issues (tho I'm using the spirit relic). Signature also hit Mr. Hyde for 7 million damage. I don't think I ever went that high in one hit.