I was looking into getting that too!
FINS is at the core of many of the Skyrim mods. It is an external scripting sort of thing that allows all manner of awesome that the core engine can’t do. Or more accurately, that modders are locked out from doing for legal reasons.
The whole paid mod thing will take a wile to sort. Because with stuff like FINS, Falskarr and other DLC quality innovations/mods and the modding community’s general aversion to having their innovations ripped off it’s gonna be interesting for a while.
Lydia, however, will continue to carry my burdens as always as I continue my divine mission for Great and Mighty TADLOS!...or Talos...I get them confused.
Bakc to Skyrim. I have burdens.