Okay, made some updates after being away for a week with a fresher mind! Lemming Ledger is coming together although I wished I didn't have to add steel there since it feels a bit patchy to me. Patching Reverse the Polarity clicked for me when I realised I could adjust the intended solution in a such a way that it no longer necessitates the Floater (I also removed a Miner that I accidentally gave to the player right from the off, especially as that breaks the guidelines for Rule 3).
