Vanaheim has been waiting for one now for a very long time. It's going to strain relations if we're now capable of giving them a branch but choose not to, and the lack of their own sanctioned psykers makes the populace more disdainful of psykers as a whole, adding another source of strain between Avernus and Vanaheim. Another thing to note is that Vanaheim has a very large population, so they'll produce a significant amount of sanctioned psykers. As a major source of psykers, it's entirely plausible that they'll spawn an Alpha or a similarly powerful psyker, and in such a case it'll be necessary that they have their own psykers to either put it down or train it.
It'll hurt to give up Aria and that action, but sometimes we have to put the needs of others before our own desires.
Actually I checked this when she became a Grandmaster.
We've been allowed to commutate sending Aria for two reasons.
1. Vanaheim really doesn't want em. Remember this is the most toxic places for them in the entire Trust still. We even did an action to check it. I know we need to change that perception, but as long as they're against it I'm happy to keep Aria.
2. Aria is an important part of our anti alpha network (no surprise there). We'd be fine if we lost her, but casualties would spike for a bit.
Its also important to note that it is very very unlikely that they'll spawn an alpha.
Midgard with a population of 200 billion hasn't and in fact only produces 1/100th of us in betas, I don't think Vanaheim is going to go super psyker soon.
Edited in
Really if you're worried about training Betas that Vanaheim might produce (since they might produce one of those every few turns), throw them in a cryo pod and take them back to Avernus the same way the Inquisition Black Ships used to work.
Sorry this turned up late. I wish the black ships worked that way, but unfortunately no, statis pods for the psykers in them. They used a combination of emp designed Wards, Null Iron, occasionally blanks and more esoteric devices to keep the Psykers compliant (in near constant pain and misery too).
An example is the occulding sphere, which lets a group of psykers focus their powers and send an invasive mental signal into the brains of all other psykers which makes it really hard for them to concentrate. These are used in concert with other more mundane methods of compliance. Lacing food with sedatives, constant noise to keep them awake while also moving them near constantly to one hold and another...yeah when the Imperium wanted to do something properly they did it properly with incredible efficiency.
Its why we haven't just made a replacement Black Ship yet. We just don't have the know how.
Eeeeh, like most things in 40k it's bit fuzzy and has contradicting accounts. For example I remember a story of navigator (or was it astropath?) in a ship stranded in Warp locking himself in stasis pod, and while his body was preserved his soul got nommed by daemons.
I remember that one. It was a navigator though as I recall he got nommed either because the pod periodically turned off due to lack of power, or they could just go an nom him.
I think when Lin burns his Soul out something.. good (?) will happen. Probably not as useful as Lin actually being alive though.
I believe Rotbart said he thought Lin maybe planning something. At the same time the statis pod is easy to test, but at the end of the day its his decision. My main concern is who's going to fill his shoes.