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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
Except that is the exact opposite of the BTC design.
BTC design is to halve every 4 years coz transaction fees will 'supposedly' cover this over time.
So doing it that way means to head in the direction of giving all the reward to the block finder ... i.e. the opposite of being a pool.