Glad you like Lix Potion, and I'm very happy to see You only get one Bash still giving you pause for thought
(No replay for Lix Potion 100%? I'm curious as to whether there are multiple ways to achieve this.)
Round Trip: Same as my solution.
Lix Cannon: Not quite the same, but I don't see any harm in leaving it. (Obviously, the level is substantially different from the Cheapo original anyway, because using the steel subtitute for one-way walls meant I had to avoid there being a digger.)
Soulful Leap: Added some steel.
Impossible Dream: I think lowering that platform 8px more should do it.
Four Lix: You're right. Still, the main thing is that the earlier backroute (in which only one goes down) is prevented, and this does seem to be the case. Let's just leave this as the final version now.
Well done on completing Zorn, that's almost the same as my solution but rearranged a little (I use the bomber on the left edge of the first wall). I also don't use the floater (which is there as a relic of a previous method). And that method of spacing the lix for the "A.T." bit is much less annoying than using the runners, so I shall probably remove all but one.