I often get requests to be joined, even when in a fighter. I always let them in. The more the merrier I always say, so give me a holler anytime I'm on.
Probably not the right forum for this, but it would be nice to have range channel comms with whomever is in your plane with you. Sometimes I have a stranger gun for me in a buff, and not want to change from squad channel, or give them the frequency.