The bridge and the pool are separate things. The DAO may launch its own bridges and then it can set the fees itself, but that's a whole separate issue than what's being discussed in this proposal.

The DAO has over 750k liquidity in a SPS:WBNB v3 position, which is 3x more than what's in the v2 pool. Shouldn't really make much practical difference on a 8k trade as you were likely using the v3 position to buy from anyway. The smart router determines the best rate, which on an $8k trade would very likely be the v3 position as it has deeper liquidity (less slippage).

Maybe grok can explain it better than me: