Frankly, I use enough add-ons that I do not know the name of each and every developer. I know who develops the ones which have been around the longest, and contributed the most to my own play of the game, during the six-plus years that I've been playing TESO.

So, I have no idea as to whether any add-on which I have currently installed must (?) have this particular Library installed, too. However, there must be a list of the libraries which each add-on uses, on the AddOn Info tab for its specific download page. Where any one or more of your add-ons use this Library, then please add it to the list on their respective download pages.

Of course, there are several Libraries which are used by more two or more developers, since that spares each of them the time and effort to design and code the function(s) which a library contains. In my humble opinion, an add-on developer (author) should not create libraries to be used by just one add-on, whatever their expectations of future development might be.

After a developer introduces one or more Libraries which only one add-on uses, if that add-on is subsequently uninstalled by a player, then each such Library often becomes an orphan. Loading them is a waste of system resources, of course. It can also diminish the performance of TESO software as a whole on the hardware that runs it.

Thank-you for your understanding of this situation.