1. make "feed the elders" sacrifice 1 necrocorn instead of all (they're a luxury resource and im sure there's people who'd like to always keep at least 1)

2. remove the 75% reduction in the corruption counter for having more than 0. if my math is correct, it takes 250 years for 1 necrocorn per marker anyway, we really don't need it to become any slower than that. if you feel that people would amass them to quickly otherwise, then give markers a higher price ratio (eg 1.25) to make building multiple more difficult.

i personally don't have any necrocorns, but i know if i did, i'd be loathe to part with all of them and not at all happy to be punished for keeping one.