Buying and burning seems like the best viable option. Success in this model can also be seen with EIP-1559 on ethereum where high usage benefits the whole platform. I am unsure why anyone would want an “earn” model; doing taxes on lots of small values going into a wallet seems like a nightmare for the user.
Also, there is a lot of talk about lawyers; but there is no industry wide regulator clarity at the moment. So I highly doubt we will get a clear answer for the foreseeable future. I also doubt a buy and burn mechanism would cause concern as it is protocol focused, very much like ethereum.
I support a fee switch on V2 that is minimal and easy to implement with low hassle to the user.