Would love to speedrun some Levels of the game. Any chance in that happening or is it not worth it?
We previously had singleplayer IL leaderboards. Nobody ran them except Joshimuz, and he only ran a couple of them like once each. They aren't anything like the actual any% runs, so they were removed and replaced with something more consistent and fun.
And honestly speaking, I don't really want to see the singleplayer missions added back. They aren't very interesting as IL's because of the differences.
I would very much recommend the gang hideout ILs though. They are very consistent and easy to run and reset. Maybe my opinion in that regard is biased though, as the world record holder for all of them.
That's a shame I would have loved to run some missions, not got the time for a full game run
If you're not on one of the recent ports, check out some of the multiplayer stuff. Those are run and easy to grind.