Cool, thanks for the quick response. While on the subject, got a suggestion for a new enthralled type:
It wouldn't be available for use at the start of the game, rather a regular enthralled would be converted into it by a ritual similar to the malign gateway ritual, almost immediately prompting lightbringers to start popping up. If the ritual succeeds, it would unify all enthralled and enshadowed lords into one empire under the buffed enthralled, give it a new "Minions of the shadow" type name, and immediately prompt any uncorrupted lords to declare war on the new empire and start the lightbringer process, if they haven't already.
The idea would be to spread the shadow from a smaller, less powerful kingdom, before gaining military strength through the ritual, instead of through the traditional way. The player would have to make use of trickery and misinformation in order to avoid their enthralled duchy being discovered before enough of the land was enshadowed for the ritual to be worth the risk. My idea of it might be OP as hell, but creating a dark-lord type figure would be an awesome way of prompting a dark vs light end game war, imo