Prior to the thrall limits and thrall leveling system, please restore the ability to knock out your own thralls and return them to the wheel, removed as a footnote in the September hotfix if I understand it right.
If you need to include a fix like resetting their inventories when removed from the wheel, please do, but this would be a good way to reduce the population of thralls prior to any forced decimation and also return any favorite thralls to storage for deployment with the new leveling system.