Support Although I don't do p2p myself, I think that spending real life money should give you a small advantage over those who not pay to play. So I'd say make it 1-2 crystal/nob regens a day.
p2p already gives you an advantage over everyone that doesn't. Its called hte. Support to the event, it sounds excellent.
Support, it would be nice to not have to stay on as much as possible to keep in the running for rewards