I think overall the alUSD/ETH pool offers more utility and room for growth. The only think that makes me think an alUSD/DAI might be worth it is the fact Uniswap v3 stuff will directly compete with Curve's stable coin algorithm. If curve was to get beaten out we would lose our only stablecoin pool. I know this is a worse case type thing but thought I would bring it up for discussion. What are your thoughts?
ETH-alUSD is likely to attract more liquidity and make the trade between alUSD to ALCX much more efficient.
alUSD-DAI will probably have low liquidity (because Curve is vastly superior and better yield returns with ALCX + Curve tokens). Remember that this “extra” sushi pool will not receive ALCX rewards, only Sushi (and a small amount at that). But this pool would greatly help the Oracle problems where everyone keeps asking why alUSD is breaking the peg (because CoinMarketCap and Coingecko only point to Uniswap or Sushiswap). Lots of other DeFi projects would use alUSD but the Oracle problem hurts them as well.
These are some of the thoughts I've gathered from friends and colleagues about it. Thought I would repost here as well.