I’m getting close to the 266 mark with a couple (in the mid 250’s) and my current thinking is to farm the 3*'s that are fed by the 2* farm, but not the others. That only takes 13 more slots and you are guaranteed that those covers will flow pretty freely. The ISO to level them is more of an issue than the HP for roster slots as I wouldn’t sell the 266’s since they are quite useful to me in PvP. I guess I’ll just have to see what my ISO situation is once I get there.
I have considered it, but I will not do it for many reasons:
the flip time is way too long (around 6 months to fully cover and champ to 166) and creates another ISO mouth to feed from my daily ISO budgeting
the net ISO is a significant loss and doesn’t justify the gained 4* covers, HP, CP, LT (in my opinion).
It takes such a long, long time to get them to 266, that I would rather sit back, relax and enjoy the boosted 3s (being around level 360) instead of starting over and creating more work. I could also have fun finding new teams with that week’s boosted 3s.
It goes a long way being able to call something done.
I have a hard time imagining that the potential for lost rewards from using a lower level 3* wouldn’t overtake the champ rewards over the course of an entire year-long champ cycle.
They’d have to sweeten the pot a whole lot before I’d look at farming 3s as an option. On the other hand, dupes seem like a possibility. It would be a huge iso sink, but I’m not exactly in a hurry to move up into the 4 transition.
With the vaulting of half of the 3* it looks like only the ones provided by the 2* farm are useful and sure-fire option (with preference on the ones not vaulted in that group but I don’t know the exact breakout).
Three-stars currently in tokens and fed by a two-star farm:
Black Widow
Iron Man
Captain America
Wolverine (Patch)
Spider-man doesn’t really Count due to the scarceness of Bag-man covers. Also, Iron Man may drop from this list when they make the next champion rewards revision as he currently is the reward for 2* Hawkeye.
That makes the farm even less exciting if the list is this short. BW give Nick Fury as a 4*, IM gives Hulkbuster (but he is likely candidate to rotate out unless the release date has nothing to do it… on the other hand his real release date is the rewark day), Cap giving Winter Soldrier and Patch giving X-Force. So other than Hawkeye-Iron Man-Hulkbuster trio non of the 2-3-4 lines is exciting in terms of covers.
I don’t Think Iron Man will rotate out of tokens, they seem to have a mix of big name characters and powerful characters in there and Iron Man sort of fits both categories. They’ll probably remove one of the lesser known characters to make room for Hawkeye, my Money is on Squirrel Girl.
This is of course all speculation though.