I've always categorised piss-play into 3 forms with pissing on being one, drinking it being number 2 and pissing up the butt (as I'm gay) being number 3. I personally love number 2, and try it on every occasion I can that feels good/comfortable for me.
I've always found pissing on to be the most boring of them all, even more boring than other fetishes... But all in all, if possible - adding in all 3 forms would be fantastic.
If you wanted help with the writing/scenario structuring I'd be good to help out, but as this has been the only game I've come across where piss has been accepted... I'd love to help you out.