Thanks @claberus for the proposal!
I’m generally in favor of the proposal and def think that financial incentive alignment is important.
I think all three proposed options are solid, each with its own up and down sides.
Option 1: This means each DAO will sell its token for equal amounts of ETH DAI and the other DAO’s token. This provides the most useful liquidity but will give Gnosis DAO (and Balancer respectively) exposure to only 1/4 of the initial value into BAL. It is nice diversification but less of cross incentive alignment is achieved.
In light of this, Option2 will give 1/2 exposure and Option3 full exposure.
Given that both GNO and BAL has decent liq vs ETH so trades could be routed, I will favor the simple Option3.