I support these categories, the intent in my eyes for a Solo "Online" category is to remove strategies that are based on using static maps, so you are forced to deal with new procedurally generated maps every game (This could be added to the Any% Baal alongside P1?).

I like the "Ancients + Baal" version of Co-Op categories because the meta for these runs currently involves G Rushing characters; the strategy shifts a lot when everyone needs to be concerned about how they are doing with xp and can't just ignore it to be glitch rushed through Act 5.