I hope Brennan gets investigated, but I’m not holding my breath.
It’s very hard to go after people in intelligence because they and their lawyers find ways to try to drag everything classified into the defense. Brennan will attempt to expose assets if anyone goes after him. I’d say he already exposed them, which may be why the Chinese rolled up our network recently...but he may still be holding cards, like the late Castro-loving bass turd Philip Agee:
http://www.trevorloudon.com/2008/03/philip-agee-two-views/
Don’t forget Valerie Plame who is connected to Brennan and Hillary’s and Comey’s circle was also connected to Agee.