Why is LEO able to create and hold liquidity pools on Uniswap, while HIVE has no liquidity & volume. Any idea on how we can change/improve that?

This is easy - LEO has liquidity and volume on Uniswap because they use a portion of their inflation to incentivize people. Hive can and probably should do that too, and it's pretty easy as well. We could just create a DHF proposal that would give a certain amount of funds to anyone who provides liquidity to the wHIVE-ETH pool on Uniswap. It could be done in a somewhat decentralized way too with some development effort put into it.

This is the type of thing that I think would be a perfect use for DHF funds - incentive for people to lock up HIVE and provide liquidity on Uniswap.