"One or two should be reasonable. That's assuming we shouldn't put all our faith in one contact." It isn't that he doubts them or anything, although maybe that is exactly what the truth is. He's paranoid, they're paranoid, it's a thing. It is more that it is hard to say who will do what and also what they'll ask. He's not going to give them a list of things to ask.

"We've managed to get a great deal of information from the Solvunn Summoned safely. Michael and Wanda in particular have been very helpful." So it seems like it's a good idea to add people in Free Cities, the place where they are the most blind.