Hey Zebra! I have been experiencing the same problem, every mission other than btb (well i was in ONE btc) I was all by myself! No one joined for a while, so I just left. But every time I join a btb, there are tons of people!! I am getting sick and tired of btb, I need to do something else!!

Thank you for pointing that out Zebra, I wasn't sure if it was only me. Thanks.
Knmh