Oh wow, you made such a descriptive post and no one followed up, lol.

I like all those abilities, but Preserve seems to be the most amazing if only for the fact that it prevents you from destabilizing a synth that's above your level. You are less likely to fail on white orbs and thus less likely to destabilize.

Also, Goldsmithing Epiphany is often overlooked, but I like it as well because it does not override boosting abilities such as Preserve, Fulfillment, or Maker's Muse - it is its own buff. So you can stack Preserve and Epiphany for the next command whereas Fulfillment would override Preserve.

All these are for spamming parts to level up though, I still have no idea what are the ideal abilities for an HQ +2 NM weapon.