Though I’m supportive of the spirit behind this suggestion, I fear that allowing arbitrary submission of addresses by any means (i.e. “dispute resolution”) is ultimately game-able, one way or another, and will add needless controversy to the vote for the proposal.
Sybil-resistance is not so simple to build into an application and it’s not so simple to prove that someone is not an arbitrageur.
Moreover, I would argue that folks who fall into the “edge-case” category of not having a project that will vouch for them in this process most likely developed their own proxy contracts to take actions on Uniswap. It seems a bit unlikely to me that those users wouldn’t have already had the technical acumen to use Uniswap directly and, in turn, gotten a UNI payout elsewhere. I would be surprised if there are more than 10 people in the world whose first and only interaction with Uniswap was through Solidity code.