Yuri will participate via the new Sentience post. I was thinking of doing this as a 'guild' thing, especially since they've only helped out in extremely non-critical capacities so far and this would be a nice change of pace. :|a Also honorary BV!Flynn, obviously.
Suzaku is kind of a question mark, because... well, frankly, if I were Sentience, I might NOT want the Defense Force involved. They were originally sworn to it, but they are currently and technically an Acumen-mobilized force. Not to mention that Suzaku would, if he wanted to help, sic the Force on the problem, and I already see some Force members saying they want to sit this one out. :|a
The last part is just less of a problem for BV, since Yuri doesn't see himself as its leader so much as another member. He could take a vote on whether they wanted to do it as a guild, but if they voted no he'd still be involved personally. Suzaku is more likely to really try to get his group Organized.
If Suzaku sits it out, my other two boys are up in the air. Jade is much more likely to just sit on the side lines and observe; Kanda... Hrm. He's canon-updated now, sooooo THIS FEELS REALLY WEIRD TO SAY but he might... help... Allen.......??????????