If I understand you correctly, this shouldn’t have any impact on the DAOs accumulation of ETH. Geysers incentivize outside LPs, so any extra fee accumulation from those positions goes to those outside LPs. The DAO only gets fees from it’s own LP positions & vaults. The DAO currently owns about 1/3rd of the uniswap liquidity.
However, you may be pointing out a different issue–If this change results in less liquidity for AMPL/ETH, how would that affect the health of the ecosystem? If this parallel proposal goes through, the DAO could deploy significantly more, nearly doubling its position in the maximal case. The DAO can also start reclaiming some of the ETH from the Arrakis vault, when it chooses to.
There is also a potential future where, if SPOT is incentivized and healthy, since it exists at the top of the stack, everything below it will work itself out in the markets. This remains to be seen though, but also I don’t think SPOT is there quite yet. Helping to grow SPOT could let us find out.