Haile had barred Ysebrand from the room. Talia's not going to negotiate on his behalf. He made his offer, he has a right to hear it voted up or down. It was obvious that Haile wasn't calling him back into the room, so why not vote the offer up or down, and move the conversation forward.
Talia can ignore whatever she wishes, she is a council member and doesn't even have to explain her vote. Darkwing didn't explain Trimalchio vote. Talia doesn't care. Aodhan said something she has no idea what it means and is waiting for him to come out of his daydream and explain it. Talia wants the issue voted on and moved forward. Her yes vote and advocacy for him shouldn't be misconstrued as a desire to bankrupt the covenant. Arguing about it, trying to get me, as Talia, to negotiate on Ysebrand's behalf wasn't going to happen. There's an offer on the table, brought in by Eilid, vote it up or down and move on. Haile wants to negotiate, she can do it with Ysebrand. I'm not preventing that. In fact, by putting the offer up for vote, she's getting past the discussion. It's obvious that neither of us will change the other's minds, and I'm honestly OK with that.
The slavery argument was never uttered IC, but your response to that was just as spurious: perhaps you should've thought about that. Well, Arya, I did. And honestly, despite whether I agreed with you privately or publicly, you drove ladyphoenix away and in that process you destroyed half of what I was using as a character concept.
He doesn't control a share of magical resources, he may receive a portion of vis, but keep in mind he can't really use it in the same way a magus can. As much as he got a good deal for the vis now, think how you can bend him over when he comes calling for a favor and can only pay in vis? Also, I wouldn't say the most valuable form is corpus. It's one of the most valuable, granted. But Creo, Rego are right up there in value and utility, Terram is mighty useful in a number of things, but Creo and Vim can both be used for LR. There's 25 pawns annually in Creo and vim sources, once any unknown sources are found and discovered.
I'm really trying to divorce myself from the Talia and Ysebrand argument. Your vociferous objection and rejection of him as a person really rubbed Talia raw. She about certamened you for it, but she's afraid you'll choose Ignem. Again, vote the issue up or down, Talia's fine either way. i'm fine either way. It's en event, it has to be handled, the effects will be determined in the fullness of time.