(Copying across from my comment on the Core repo)
This should be opened to bitcoin-inquisition rather than this repo at this stage? I thought that was the whole point of bitcoin-inquisition. I can summarize why bitcoin-inquisition was introduced in the first place if that helps. It might seem overly finicky but having all proposed consensus changes (especially if they are new) discussed in the Core repo just adds too much noise to all the work that is being done on non consensus changes in Core (imo).
Also I’m interested in why you think LN-Symmetry would be better implemented not using APO?