When the 'autofill' button was first implemented in the skirmish lobby, I thought, "Thank goodness. Now I don't have to keep clicking to insert AI players." But upon clicking that button, I found that it automatically adds 'Normal' level AI's. That was unfortunate for me because I only ever want to play against Nightmares (anything lower is even easier than they are).

So I'm humbly but strongly requesting that that button has a little drop-down where you can select the level of AI's to autofill in slots. Don't think that's too difficult and I'm sure I'm not the only impatient/lazy one who finds it inconvenient to fill the slots one by one.