TPR, I’m not sure if I’m one of the peeps you’ve seen, but I’m close enough that I’m going to reply to you.
I’ve got a 7-cover level 156 X-force (max green and 1 in blk/yellow), a 104 3* Storm (3/1/4), and a 102 R&G (2/2/4). Beyond that, a ton of 94s.
It was becoming increasingly difficult to stay competitive in PvE and PvP with just the 94s, even running solid teams with some combination of OBW/Mags/Storm/Thor/Ares. Here’s what I knew I could definitely get (this is pre-DDQ): the 300-point token in PvP. That’s it. Even the top progression award wasn’t always achievable – it depended on the required character and the timing of the nodes a lot of the time. (I would say that it was achievable at least 90% of the time, though, so if you want to count that as a guarantee, I wouldn’t object strenuously.) I’m not in a top 100 alliance, and therefore don’t get the “bonus” 3* covers that events dish out, either.
I did get some lucky token draws on green for X-force, and (as others have noted) there are multiple X-force covers given away as daily rewards. I actually did hold back on leveling X-force for a long time, because I didn’t want to upset the scaling apple cart. (Side note: I haven’t noticed a huge difference now that he’s at 156. It seems, in hindsight, that pushing Storm and R&G above 100 was the big factor in scaling up nodes for me. Interesting…) But in the end, I did.
Why? Because I feel I have to do that to remain competitive, especially in PvP. For better or worse, I’ve noticed that I do a lot better on defense leaving X-force and OBW as my defensive team vs. Ares and OBW. Whether X is legitimately better in the hands of the AI than Ares (possible) or people just don’t want to deal with him and move on (possible), I get hammered down a lot less these days. Also, X-force with the 5 green is just faster at damage-dealing than Ares or Thor. And speed is of the essence in PvP (and sometimes in PvE).
But more relevant to your original comment… In the end, for me it’s got nothing to do with foregoing covering up a good 3* team… It’s that I can’t cover up a good 3* team. I simply can’t get the covers with an all 94-level team that’s outside of a top 100 alliance. (Again, DDQ changes this dramatically.) Or, more accurately, I can get them, but at an extremely slow pace. I’d love to have a well-leveled Hulk or Loki or Dr Doom. But if I can’t get the covers, I can’t have those.
Again, DDQ changes this calculus, which is why I’m psyched by its inclusion into the game. Would it, in hindsight, have changed my decision about leveling X-force? Honestly, no - the benefits of having X-force are too great (and the scaling cost isn’t prohibitive for now). But it does give me the chance to, within a reasonable period of time, get some significantly-leveled 3*s to pair with him, and get to a more “appropriate” level of competition for X-force in PvP.
tl;dr: It’s hard out there for a pimp.