Here is my current 4*/5* roster:


I am wondering if I should rank Mordo to R2 at least for now? Also I have Quake and Nebula at R4 20/40 (not enough ISO to finish them off yet... also I ranked Nebula when I only have 4-5 4*s and she was my best at the time).
Should I rank and level any others or just stick with what I got until I get a decent champion? Hoping for some luck here soon. The only Demi-God Champ I have was from the $1 crystal (well Hulk I got recently too... but he needs to be awakened so not sure if I should level him past R2 until he is awakened or not).
Also I leveled Winter Soldier and was stating to level Civil Warrior as they have a synergy with Cap... but now i see it is all armor up type bonuses so not sure if it is worth it or not. To em it seems the best high level synergy I have it Mordo and his synergy with Falcon (+ Critical Rating).
Here is my current best questing team (at least I think... in any case it is my current team that I use, before this is was Quake, Nebula, Vulture, Agent Venom, and a Max 3* Awakened Dr.Voodoo):

Any adive would be greatly appreciated. Also I know there are many guides out there and YouTube videos (have read and have watched a lot of guides and such... issue is they do not help much with newer players with specific rosters and or roster restrictions... so telling people to just go read something does not help much

).