I'm up to 1,270 but tend to bounce around with my deck a lot. My "main stay" lineup that I play when I'm not catering to Missions is typically
1s: Sunspot, Hawkeye
2s: Okoye (sometimes)/Shocker, Domino, Scarlet Witch (to change the shitty locations)
3s: Mister Fantastic
4s: Jessica Jones, The Thing
5s: Klaw, Aero, Abomination
6s: The Hulk