So 1p2c is tricky. On one hand, 1p2c opens up more possibilities for a singleplayer run, and in full game runs the time spent reloading the game into co-op mode is more than made up for in the timesave vs normal singleplayer strats. On the other hand, even for the strats that are actually feasibly done by one person in the first place, some levels or phases would have to be played entirely in co-op mode in order for those 1p2c strats to be feasible. In that case IMO it would make more sense for those ILs to be 2p runs, just with one runner. But then there's the issue of full game runs where some of the levels would be done entirely in co-op, but not all.

I know that my first full-game run will be done entirely in singleplayer mode, so it'll be interesting to see what that looks like with no 1p2c strats. But I don't want to jump the gun and say "1p2c should be banned in 1p runs" yet. Plus my skill issue of using controller and keyboard at the same time is another factor in me not wanting to learn 1p2c strats...

After thinking about it some more, I do think that 1p2/3c should not be in ILs, not only because quitting out of levels allows for easy cheating but quitting out also allows for lower IGTs in certain levels than what would otherwise be possible (with Mysterious Burglary being a notable example). I would rather keep IGT for ILs to make things simpler and to make competition between different versions more fair. No 1p2c also means that 1P runs would have more strat variations compared to 2P runs and it could lead to finding ways to do 2P strats with just 1 player. I think 1p2/3c should only be allowed in co-op runs with the player fully commiting to the whole level and in that situation, it’s naturally better to have other people playing.

As for full game runs, 1p2c does seem fairer to include since with RTA timing, the extra time needed to drop in and out may prevent it from being worth it in some situations but I am still not certain whether it should be a thing.