Really good point actually; Greg very much played the role of calling out Josh (and Valencia) and stopping him from dominating everything. In Greg's absence, WhiJo is forced to step up as the next strongest personality.

I've wondered for a while now what drew the group together, and especially what Greg was doing in it/what would keep Josh and Greg "best friends" as adults when they're so different. Loyalty and shared history has a lot to answer for.

She actually comments that the tapes are Ben's, and she inherited them along with the car.

I personally retconned that part by assuming that Matt was alert enough to guide Foggy home via the back alleys and tell him when anyone was coming, like he did for Elektra when they raided Roxxon.