That's where DestinyGAF group/clan comes in.It's really fucking annoying that Bungie want to impose their friends rule on everyone.
It's hard as fuck to arrange anything with friends when you're an adult. That's even assuming they have the same console, game and PS Plus/live.
Example: message pops up from in PS chat asking if anyone is free for the weekly, myself and another answer the call and FR/party is started and we have a blast for an hour and make new friends along the way.