We should take into account how often the default action is used and how big of an impact it is to accidentally press enter.
- Recharging wands: sensible default.
- Calming a monster isn't often done, but the impact is quite low as well because you can just kill the monster if you accidentally give all your money to it I think.
- Give item to monster: I'd perhaps change this as well because you can accidentally give all of your money to a beggar for example. I mean it makes for a happy beggar for 10 seconds before you slaughter it. I'm not even sure if you reclaim your money. This function isn't that often used either so changing the default from all pieces isn't that hurtful.
- Drop item: keep the same, function used often and low impact if accidental -> just pick it up again.
- Picking items: same thing as with dropping them.
- Offer sacrifice: I feel like players wouldn't that often sacrifice all their money instead of sacrificing small or medium amounts so the same thing as training with Garth. I'd vote that this is changed to zero or a small amount: if you accidentally press enter on a non-aligned altar and the default sum is too big then you will accidentally convert it, which can potentially have a very high impact. (Only altar in the game, dwarftown altar and priest aggroes and kills you).
- Pay debt: this functionality is used often and the chance of accident is low. If you don't want to buy something you generally just don't have the item in your inventory.
- Pay tuition to Garth: reason this ticket was made.
- Buy from ratling trader: this is already a sensible default, same thing with master thief lessons.
- I don't know if I have the authority to comment on the far slaying wand, I don't really use it that often because it's very random.
So TL;DR I would change
Offer sacrifice to zero or a small amount,
Give item to monster to either 0 or 1.
Pay tuition to Garth to 0.