Right, Crintera doesn't have to know anything about Praxiteles. They just want the covenant to be engaged in commerce as a check on the growing commercial interests of Oculus Septentrionalis. The reasons for sponsorship aren't related on the surface, but become related because of the demands of each covenant sponsoring. Oculus is expecting Via Experimenta (is that our name?) to be receptive and cooperative (or at least easily manipulated) because of placing Praxiteles and his spying wife.
I think that sounds fine. We're probably not wild enough for some Bjornaer, but for the more refined and sophisticated ones we would be a suitable covenant.
And this may be a concession that Oculus is willing to make, they understand that the vote is coming. Perhaps Crintera will be satisfied if a majority of the magi of the covenant support their motion and would understand a single or small number of votes going to Oculus, not that they like that idea.
I want to play the Irencillia one a bit differently. We have a weak aura, and a faerie tree could quickly come to over power our magic aura. I don't care to mess with faerie stuff too much, and I don't think we have any faerie inclined magi, unless I'm missing something or not remembering.