Well, unless it has changed, the block solver already gets a bonus, so if the solver is going to get all the TX fees, then the other bonus shouldn't be done anymore.
Pick one or the other, not both.
-- Smoov
Yeah, so there's really no reason not to just change it over to the TX'es. Add them to your blocks, take the risk of having a few more orphans, but get the whole TX amt if you solve it
All p2pool nodes help propagating the transactions contributed to the blocks you mine,
so I guess they all deserve a portion of fees

And it should not be measured in hashrates...