[...]but implying the pool could pay them sounds the same as saying the pool fees are high.
[/quote]
Not really, and pool does not pay them, it gets them back with the extra space on the next block. It's basically like this:
(To make things simple, lets say
tx is 10kB, and the
lowest tx fee of the last block per kB is 1mBTC, thus
tx fee is 10mBTC)
- Pool pays for tx fees, i.e. 10mBTC
- On the next block, there will be 10kB more space for transactions. Thus, the block will be worth ~10mBTC more, that will go to the pool.
Pool fee stays the same, rewards for miners stays the same... but
earlier!
Note: for this to work the tx for the payments needs to pay the same price per kB as the lowest paying 10kB of the last block (since it will be more or less the same as the next one, and its data already available) This amount is not gonna be 0.