This thought just crossed my mind again after seeing that there's a new type of bot being mass-produced across the servers that progresses through the MSQ through "normal" methods to avoid detection from the STF.
They're all archers, but they never unlock BRD because they're too stupid to finish their job quests without dying (They don't dodge AoEs at all, which is an easy way to get yourself killed in any form of content). However, they do queue with randoms throughout their leveling process, forcing people to deal with a player who's both inherently limited by their lack of job progression and exceptionally stupid.
While this is a significantly rarer occurrence with actual players, the fact that it's allowed to happen at all when BLU is being limited specifically because they were worried about people doing content without skills that are virtually mandatory to perform your role properly is really baffling.
I'd like to hope this is part of the combat overhaul we're getting in 5.x, but I'm not feeling terribly confident about it.