So, on Umbral Shards, I have been heavily leaning towards trying something new/shitty/awesome/novel/weird. The entire playstyle that I am going for on the game will be players vs NPCs/Meanies/Monsters, so that the PCs are mostly cooperative. This will require STs running scenes or at least adjudicating them, so I still have a lot of work to do both in the system and in support code to make things easier to resolve via rolls so that the players and ST can focus on the story.
My crazy idea is this: Global XP earning.
What that means is, the players as a whole earn XP into a global pool for the week. Stories that are ran, votes for amazing RP, votes for amazing STing, whatever other earning qualifiers we throw in (the initial playerbase is going to get a large say in guidance on how we end up forging forward with the pathfinding, here).... all pool their XP into a game-wide pool. I do think that perhaps amazing RP votes, personal PC sacrifice for the Greater Good, and other such 'above and beyond' singular events might earn PERSONAL XP that this player gets to keep. But I am undecided on that yet.
The players that were active* that week will get a share of that global XP to put toward their character's advancement (which I plan to do differently, too) (I know, I'm fucking everything up). There will be various limitations on caps, so forth, but this is the general idea.
So the Incentive here is: Activity. That everyone can glom onto, share in, reap the rewards of. THe more activity, the more XP in the pool, the more everyone gets. 'So get out and RP' is the message that the system is intended to push.
Okay, that's my idea for my small niche game. I'm curious to hear the things I'm not seeing or missing.
*Active means active, IC participation in any capacity: playing, supporting, STing or even developing game material. If you contributed, you get a share.