(1) Can actions be held? If I wanted this, what kinds of limits should I impose?

(2) I had an initiative idea that's cool, but needs some fixing. Whereas the player would be rolling Adroitness # dice for their number of actions, we could instead make a deck of cards, wherein there's one card representing each of the player's default actions. So just add the representative cards for each person's actions, shuffle together, and you now have an easy queue for turn order and the like. It even feels a bit CRPGish, which can be a plus.

So, how would you account for:
- aborting an action in order to parry?
- abilities that allow for adding extra actions?

My on-the-spot ruling for question 1 is that actions can be held. If you would like a limit, the action can be held until the next character acts against yours.

I dig your card-based idea. I would recommend having people reserve a number of cards equal to how often they want to parry, which changes the game a bit, but not horribly.

I think I never mentioned that I was talking about Donjon. Lo, I was. :)