Resolves YES if by December 31, 2023, Manifold implements some form of https://uniswap.org/blog/uniswap-v3 (possibly combined with the existing "Maniswap" which is based on uniswap v2), allowing range orders for liquidity.

See previous question for context: https://manifold.markets/Austin/will-manifold-implement-uniswap-v3

The potential advantages of this are allowing concentrated AMM liquidity in ranges of heavy trading activity, instead of spreading it out over the entire range of 0%-100%. This helps liquidity providers provide more useful liquidity with less capital and less risk. And in particular, it appears that it would allow market making via range liquidity, which compared to today's limit orders may allow easier, more automated market making.

I think the main disadvantage is the complexity, both to implement it and for potential liquidity providers using it.