Where to go next (3* completionist list)

WalrusBrigade

Ok, let's assume that I have all 3* at 13 covers and therefore my leveling is somewhat guided by what covers I have. Also we can assume that I have no cover-functional 4*. Neither of those are true, but they set up the premise. Help me which 3* to champ next. This decision is going to be made in a vacuum of other 3* I have because my heavy hitters are all champed. So I'm really picking from the dregs. Below are the covers that I have and how many days are left on those covers. It is safe to assume I can best get enough ISO to level one of them so I can't just go in the order of the covers . . . which one should I do?

Psylocke (13 days)
Mystique (10 days)
Human Torch (10 days)
Loki (6 days)
Gamora (4 days)

TxMoose

if you have all the big guys champed, I'd order them basically bottom up. gamora is only really useful if you can get her tanking (she is wonderful with fist, but has to be even/ahead in levels for the combo to work, so for many, that is only on her boosted weeks). so I'd do her first. loki is a solid support I like playing with cmags and/or thor (when I'm in an old-school mood) and while you don't want him as one of your first champs, once you get the t10-14 done, he can always benefit from the health. mine just reached 200 and boosted to 300 in LRs he can be a real pain with some health to him. and then torch is a personal favorite of mine as a damage dealer, but most don't hold him in high regard. he's not a tank, but he can put out some damage with some ap. I love him with im40 (or hood would work too) and a blue/purple user (doom or mystique).

Calnexin

I voted Loki, but I take it back. I'd go Gamora or Mystique.

Gamora's got two big situational powers. Her red is cheap so it pairs especially well with OML, PX, and KK (who fire powers when teammates fire powers). Her black can be devastating in certain situations - great when you pair her with IM40, because he can stun himself and abdicate his color seniority to her so long as your third doesn't overpower her. If anything, you might want to focus on her first, because her black power requires she be ahead on color power. If she's lower level than her teammates it's useless until she's boosted.

Mystique has a color set that complements most solid teams well. Her black is a decent nuke if it's set up with her purple, and her blue can possibly fuel more potent characters if you set it up right - pairs great with IF, Doom, and Switch.

I haven't found a good use for Psylocke yet. Her red and black are relatively cheap and have ancillary effects, but overall the damage and effect are weak. Her blue is pretty much useless.

Loki is great, but his powers don't scale. The only benefit you get are the match damage and health bonuses. Maybe the least bang for the buck.

Torch is a solid damage dealer, but he drains other colors. Properly managed it shouldn't matter, but it does make him less versatile.

stochasticism

tl:dr: Champ Mystique and Loki and sell the rest.

Here's how I decide on 3*s. First, are they boosted in LRs. That puts Loki, Mystique and Gamora on top followed by HT and Psylocke.

Next question what 4* do they give out as rewards. Mystique gives Iceman, the others Venom and Star-Lord respectively.

Based purely on that I would rank them

Mystique
Loki
Gamora
HT
Psylocke

Now, I also happen to really like Mystique as her purple-> black combo is devastating for a 3*. Loki always needs more health so champing is a bonus for him. Gamora I am meh about though others really like her. Her red is spammable if you like that sort of thing (OML, KK, etc). Psylocke and HT are meh 3*s. I actually do use Psylocke every day in my forgotten heroes Big ENchilada team of Bullseye/Beast/Psylocke. It's a lot of fun when it gets going with all those special tiles.

JeffCascadian

Loki's one of those characters whose powers don't really improve with levels. It's a boon for his health and match damage but that's about it.

Gamora's a good choice, especially for her cheap, cheap red. That makes her a good match for characters who have powers that activate off of other powers (like Kamala Khan and Carnage).

Personally, I like Human Torch on your list. I'm not fond of his black power but his red and green are great.

Sluggo

I love, love, love playing Torch and pairing him with IM40. I had a near-perfect record in one of the Civil War events using them with OBW. You get IM40's Recharge off, and suddenly Torch has a ton of red AP and a bunch of Fireballs to chuck anywhere he wants.

I also get a lot of mileage out of Torch's green. If you're looking for a third to team with IM40 and OBW (who are a great pair for goons, as IM40 feeds OBWs blue to delay CDs), Torch's green and black make that a nice rainbow team, and with IM40's Recharge and OBW draining AP, suddenly Torch can be sitting on a giant pile of green doing 2k a turn, which adds up quick. I don't use his black much, so that AP drain isn't a big issue for me.

I'm sort of in completionist mode as well (23x 3* champs and counting), and Loki and Mystique are on my "probable" list. I'm just waiting for them to come up as PVE rewards. I might get to Gamora sometime after that, while Psylocke is nowhere on my radar.