This proposal carries hazards and other risks that no seems to have mentioned, let alone considered:
Who will be responsible for global legal and tax-reporting compliance?
If no one, then who is willing to take the fall for violating the various and sundry tax laws?
Who else is willing to have tax authorities pursue them for failing to report income?
Who wants to be identified as a tor user, let alone a relay operator?
Who wants to be deemed part of a criminal organization?
Compensating tor operators turns tor into a commercial business. Who will obtain the various licenses, incorporation papers, tax registrations, et cetera, et cetera, ad nauseum, for operating tor around the world?
Things must be considered when discussing money.
Seriously.
ddj