I'd much rather see my money to go the Bitcoin foundation.
If some people are unwilling to release their personal details and would rather sign a message with the associated btc address invalidating their claim, I think that those coins can be donated to the Bitcoin Foundation.
This is not an unreasonable request and I will speak with counsel to see if something like this can work.
That makes absolutely ZERO sense.
If you're willing to send the money to Bitcoin Foundation if they sign the message with their BTC address, then why can't they just do that and then you send THEM the bitcoins? That's totally and utterly inconsistent.