Arelith

Small flavour-based tweak, link each domain to unique way to get piety. Examples;

Good/Evil domains lose half the normal piety on each RPR Tick if the character is Good/Evil.
Animal domain gains piety on a successful Animal Empathy check.
Travel domain gains piety on every area transition.
Sun domain gains piety on use of Turn Undead.
Air/Fire/Earth/Water domains gain piety when summoning appropriate elementals or taking electricity/fire/sonic/acid damage.

I like the idea of making domains more relevant. But I'm not going to get to this any time soon & I'd like the changes to do a better job at steering players to deity-appropriate domains.