Give an incentive to the Merit Sources for them to be proactive in achieving their quota.
Merit sources have an indirect (unplanned) incentive to spend their merit.
We are more likely to receive merit in return for passing out our own merit. :/
I think that most merit sources do not need any merit.
Actually merit sources should not need merit at all. To avoid conflict of interest.
Anyway I think there is no need for an incentive.
Maybe we need more merit sources, because there are lots os comments daily in this forum and just a few (about 80 last time I saw) cannot read all of them.