For server administration, it would be good if Vampirism would log when a player resets their skills (preferrably in it's own file as the main log can get very crowded) and what level the player is at afterwards to avoid such nonsense:

I added a log message with following syntax [de.te.va.en.fa.FactionPlayerHandler/FACTIONS] Skills were reset for <player_name> and added the FACTIONS logmarker to (lord-)level changes for easier search.

The messages are all logged in the debug log.

Creating a new log file would be to much for only some log messages. And i am not sure if this is possible in an simple way.