Just add a subcategory on the main leaderboard with "0.1.x" and "0.2.x" (and add the rest of ils)
Sorry for the late response, though to be fair you can already filter by version. If you think it should be a subcategory we can change it.
Going through with this reminded me why I didn't do this in the first place...
Most of those Any% runs were done on 0.1.x, but naturally the default should be 0.2.x...but since speedrun.com defaults to showing that, the Any% board is now blank.
Ok so my solution for this is that this change is only in effect for Any%. ILs will use the old level variable. This way, I can set the default for the subcategory to 0.1.x, causing rhe leaderboard ro actually show scores until there are any 0.2 runs (if I hadn't done the former thing, most IL boards would be blank as most people have run 0.2.x on rhem).
