Birthright:

All holdings (except source) are reduced. Seems pretty straight forward that the penalty/punishment is inflicted equally (if not more so on the owner/allies). Additional actions and resources are needed to restore levels. It isn't the most action/resources efficient mechanism. And if more than one h...

I don't see levies as necessarily their bannermen, they tend to be forced conscripts (hence free cost and poor quality - additionally why I think holdings could be targeted). Permanent loss of holding is a significant cost already though. Even a realm wishing to just someone by this method will be t...

1) The initial wars in the game used permanent holding reduction, so it would only be right to keep that going forward. 2) The holdings reduced could be targeted (provided they are not hidden), there aren't equal opportunity laws, etc, in play at this time -- nor in most realms. It is a nice way for...