Adding an entry for drycha and each greenskin faction with each throt lab upgrade in faction_banned_unit_purchasable_effects_tables seems to have fixed the problems I encountered (being unable to upgrade units with aspects or scrap), I haven't seen broken AI units since I made the patch, they appear to have the correct scrap upgrades so far. I have the submod but am unable to upload to workshop (or comment on mods), it currently does not include waaaghs as I am unaware if they can get scrap upgrades.