So, I was re-reading our progress on the library, because I find that a soothing and relaxing pastime that helps lull me to a pleasant sleep, and started contemplating what our endgame should be.
Over the next few years, we're very likely to finish up hoovering the various Nuln libraries/Mootland Library, at which point LK8P/KAU will be a legitimate world-class contender.
But that's not the limit of my ambitions. Using our existing scope as leverage, once that's complete, I'd like to negotiate a full reciprocal exchange agreement with Tsar Boris, the Laurelorn Library of Mournings, the Altdorf Cult of Verena, and the University of Altdorf - and as a "gesture of goodwill", offering the same to each of the Nuln libraries we already copied.
Tsar Boris won't have the same kind of "GET ME EVERY BOOK IN KISLEV" impetus to play along as he would if we called it in as a debt, but the general idea of having a backup copy of Kislev's most important knowledge and literature in case it gets lost remains something I'm fairly certain we can sell him on, especially if we start copying it on our own (or rather Belegar's) dime.
The Library of Mournings has been explicitly called out by Boney as having spent centuries considering itself effectively the only library remaining in the world, and as such doesn't really have an inclination to see other libraries as potential "competitors" - a good faith reciprocal offer has every possibility of being accepted.
At that point, we'd be basically going to Altdorf's Libraries and offering them a deal they can't refuse - they can either agree to sharing their books and getting access to the books of a, by that point, outright
larger library - or they can get left behind if their competitors
do agree.
From that point on, it's in theory possible to just kinda sorta... Katamari Damacy our way across the Old World picking up more and more libraries willing to join our Library Voltron pact to get literary superpowers - since the more Libraries that have a reciprocal agreement with LK8P, the more powerful such an agreement becomes. Eventually the deal will get sweet enough that even Marienburg's Libraries will probably want to sign on.
We would have to spend a bunch of time working with the Cult of Verena to make certain we didn't make too many significant enemies in the process of doing this, of course, since we'd kinda be making massive waves in the library circuit and would basically be empowering the "spread knowledge" Verenan factions against the "hoard knowledge" factions, but that's part of the fun.
The final boss, of course, is trying to convince the White Tower of Hoeth to sign up as a member of our network.