So 98% of sorcery is a waste of time and it would benefit from having more reasons to actually level it outside of bats/teleporters/thrall perk resets.
Add a sorcery table that acts similar to the thrall pot but instead of feeding anything in its radius it repairs structures. This would help counter offline raids at least a tiny bit. Balance it by limiting the inventory size, only allow 1 per clan, and maybe only have it work when no one from the clan is online?
My original idea was a builder thrall that would run around and repair (also more easily counterable as you could kill him), but given how jank thrall AI is this seems more realistic.