What game-content should I focus on clearing next to help build up my roster?
I'm approaching my 6 month anniversary and realize I have not cleared very much content. I've focused entirely on arena and building up 25 or so teams for basic grinding. After earning Blade and his dupe last week I now want to focus on content and learning how to fight long fights. I currently have 52 four-star champs and 7 five-star champs. My best champs include:
Four Star Duped Champs at 4/40: Medusa (Sig 50), SE SM (Sig 20), SL (Sig 20), Blade (Sig 36), AA (Sig 39), SW (Sig 99), XB (Sig 1), HE (Sig 60)
Four Star duped Champs at 3/30: Doc Ock, YJ, Symbiote SM, CM, CW, Punisher
Four Star unDuped Champs at 3/30: Thor, Cable, AV, RH, NC, GG, TM, Hulk, Ultron, Dorm, LC, Yondu, CA WW2, Morningstar, Angela,, Quake, X-23
Notable Five Star Champs: 2/25 versions of Ultron, CM, Elektra, CA OG, and GP
I've been putting all my units into masteries and have DW at 4/5, Assassin at 2/5 and Willpower at 1/3. Biggest problem is lack of t4cc. Currently have 3.5 in cosmic, 2.5 in Science and Mystic, and only 1.5 in Skill, Mutant, and Tech.
Currently I can clear the master level of the monthly quest (except this month) with spending potions but no units but can't explore it 100 percent. I've cleared Chapter 4 but only fully explored 4.1 and 4.2. Have cleared Chapters 1-3 of RTL and have only cleared Chapter 5.1.1
Given my lack of god-tier champs and rank 5 four star or rank 3 five-star champs, what is the best next step?