I cannot fathom the designer who made the matchmaking systems. For the most parts, it's focused on the 16 players in one instance of the world, plus one's friends list. It never ever sends out more than 16 invites at a time, and it sends it to same people over and over again, doesn't time-out requests, and doesn't expand the search properly.
You'd imagine, if you hit Quick Job, regardless of what it is, you'd be entering a full lobby everytime. I mean the servers are packed to the gills with players. To the point of collapse. Whoever wrote GTA Online's matchmaking algorithms screwed up royally. I think I managed to fill-up a four player lobby once. 8 players is the most I ever got for a 16 players lobby. Standard is 2-3 players, and horrendous waits.
Outside of the current matchmaking algorithms being the result of managing the player masses and reducing server strain, and matchmaking was actually meant to be much more efficient at populating lobbies, I cannot express the magnitude of fail on display. Other than that, I'm hooked. Almost ready to get my luxury condo, so I'm ready to go on some heists, as soon as they come out.
P.S. Beat a round of Survivor (Horde Mode) for a 20k payout. It's 10 waves, and very doable, if your group figures out a good spot to hole-up in. So get in on those Survivor jobs!