Honestly, the more we talk about it, the less I care about how we use the boon. It is true though that currently we only have 2.5 different viable plans for the boon, a few more if BoneyM rules that the CoL thing is multiple separate boons. So anyone who doesn't want BOOKS or BOAT would pretty much feel like the boon is thrown out the window.
And I also can see why some people would like to keep it as a reaction. For instance in a multicultural Karak we are just waiting for some form of massive blunderGrudge to happen.
Here's a third option. It's a bit tasteless and I wouldn't vote for it, but you could use it as "seed favor" to create a kind of Grudge insurance for certain kinds of Grudges. Specifically those that arise from culture clash and those that are inherited and other such forms that non-Dawi will simply not grog.
Or maybe such an organization would just be a massive and enduring insult to the Dwarves that they can't do anything about. As I said, I'm just spitballing here and wouldn't vote for it.
Another option would be a large cache of technology that wouldn't otherwise be shared be given and taught to the Empire to whatever extent our boon is worth.
Honestly, other than research forever I can't think of things I want for Mathilde personally that Belegar can provide. Just "improve humanity/aid the Empire" kind of stuff that I'm ultimately pretty meh about.
Edit:
@TotallyNotEvil What you say makes some kind of sense. But then the "waiting till Belegar has more dough" vote that's second place would be decidedly the wrong one to go for.
Also, a difference between a normal College of Magic branch and what I'm hoping for is that it also includes a non-magical University and an independent Dwarf-run Library that both aren't legally subordinated to the Magister Patriarch, even if the College branch clearly is.