I think this proposal is brilliant. One potential flaw that I see is that it incentivizes users to jump from one Treasure-affiliated project to another without much of an incentive to stick around. Jump in for the 2 weeks of boosted MAGIC emissions and then move onto something else.
Perhaps a solution to this would be to offer a second round of boosted MAGIC emissions in the future if affiliated projects meet certain DAO-defined metrics (maybe volume traded on the NFT marketplace, MAUs, etc etc). The metrics should be stretch goals that require serious work to reach. That way, new projects and their users have an incentive to keep building traction to ensure they can get another boost of MAGIC in the future.