Have not looked into liquid.
My main focus is just keeping it as simple as possible and stacking sats. I really only care about the base layer right now.
Beyond that i think layers/sidechains could have a big impact for the future. But they could also be replaced in 5-10 years with something better.
Base layer will not be replaced, so my energy is mostly there.
Lightning is cool though. I don’t keep many sats on it however