I fully support this proposal. I would even go more extreme and say that once a year is enough. Most elections you only get to vote once every four years, and I think it would be nice to have a yearly event in which we encourage people to reconsider their delegates. Of course they can use the “once a year” anytime they want, and can redelegate paying their own gas as much as they want–but imagine we had a “get out and vote” campaign every year, during the airdrop anniversary?
I consider delegation part of voting and voting to be a public good, so is within the scope of the DAO to subsidize.