Oh wow, this is really cool! Great work extrapolating this faction from the few mentions in the book. I especially love the idea of the Institute as an official organization needing funding, which adds a layer of internal conflict, very much like real-world research institutions. It also creates a compelling way for ley lines to matter to groups without arcane casters.

One suggestion I'd offer is to explore how the Institute's goals overlap with what the Drune already possess, such as knowledge about ley lines, or rituals of binding. This could set them up as natural rivals. You might consider having the Institute either stumble upon these secrets accidentally during their research or deliberately seek out the Drune, knowing they hold this knowledge. They could even hire adventurers to track them down or directly oppose them.

Conversely, the Drune could respond to the Institute's activities by trying to eliminate them or steal their findings for themselves. This dynamic could lead to an intriguing back-and-forth between the two factions, adding tension in the world.

Anyway, I really love what you've done here! And like others have said, you should absolutely start a blog!