I'm sure people have mentioned this before, but a number of other franchises offer bonus weeks/weekends as a way to promote playership.

I'd be excited to see double Wolfmark, aetheric light, tomestone, allied seal weekends introduced, possibly even a rotation between the different sorts of currency. It would give the prospective weeks/weekends a sense of prestige and an incentive for players to log in. "Remember to log in this weekend, double tomes." I hope to see this in the future.