Well, i feel like going through the Colleges is the best solution. While Alric may be able to muscle his way into the waystone project, i don't really see it as something he'd do? It would be a shared reward, who's glory and prestige would mostly go to Mathilda, who is the unifying force behind the Elves, Dwarfs and Kislev people gathering up here. And i doubt he could just usurp controll that easily, in this case.
So for the sake of his goal of entrenching into the position of patriac, i don't see Waystone project as something that's that viable, at least not compared to other options he has. And while Alric might be spitefull towards Mathilda, this is a project who will kinda be backed by Elves, Dwarfs, Ulrics and several collages. It just seems way to politically risky to try and mess with it like that for essentially no gain beside spite.
Furthermore, as we study more waystones people will find out about the Dhar part. It's kinda inevtiable due to the fact that it's the whole goal of the project. And if the desired goal is to spread the knowledge on how waystones work, that part would be included. I think it's better to show that we are following the articles to the best of our ability, and going through the proper procedures instead of just trying to subtle do this stuff in the background.
Like, Sigmaraties might be suspicious, but i think it's better to have them know "Matilda knew of the Dhar and openly talked about this" instead of "Mathilda knew of the Dhar, and tried to hide it as much as she could",. While both of those are quite suspicious, one of them is far more then the other, no?
Overall, i feel like College is the best way forward here
[X] College Dispensation