I was thinking it would be cool if p2pool.info listed how much has been donated as subsidies. Maybe that could be added into the luck calculation, too.
That is a good idea. Maybe a separate item.
Just thinking about how I would detect these... I could look for sendmany transactions that have known addresses in them. Maybe the donation address is enough?
To incorporate these into the luck numbers is a little more tricky. Right now luck is not measuring amount of BTC earned (vs expected), but is measuring things based on hashes. I'd have to change it to be based on BTC or I'd have to translate subsidies into "hash equivalents". I'll think about it more after I look at finding a way to identify subsidy payments in the first place.