If it's an attribute in DC, even if it's not being consulted at the moment, we can check it.
I.e. we can do morale checks now.
Richard had the morale system and fleeing in place, but he found that monsters kept running away and in certain circumstances (I can't remember what they are) fleeing would cause DC to crash. So, he turned it off.
Personally, I don't mind creatures fleeing so much (I do mind the crashing, however), I've always thought that the AD&D CRPG way of every creature stays and fights to the death is kinda ridiculous.
Sweeping would be good to have. Another thing, that I thought was working until doing testing Tuesday and yesterday, was that higher level fighters/paladins/rangers are not getting more than 1 attack per turn as they should. I don't remember off the top of my head at which point they get 3 attacks every 2 rounds or 2 attacks every round, but I'm pretty sure by the 25th level that it should be more than just one per every one. I guess I need to submit a bug report.