According to...oh, where was it...oh, right, the talk Waid gave at whichever comics con it was. Anyway, he said Brainy was going to be the science advisor to the team. Which, okay, not ideal, but doesn't sound like to me like he's being set up for RJ's position. I think there's also room for Brainy keeping an eye out for kids with potential without acting as their camp counselor after they come aboard (notice it isn't Brainy giving him basic orientation in the preview scans). It's not something the post-ZH Brainy would have bothered with, but there's nothing to say this version will be quite that...ah...difficult.

(It also suddenly occurs to me that the preboot Brainy technically did recruit Invisible Kid II, although the circumstances were a bit unusual.)