Thanks, I forgot that one in my response! Yes, minions definitely should make a comeback in some form. They were awesome, especially when you cranked up their damage output.
The challenge of doing minions in 5E is that 5E has gone back to the old paradigm of D&D, which is that a monster's stats reflect actual discernible traits of the monster. That is, if an ogre has 1 hit point, it tells you something about that ogre--she's badly injured, or physically very frail, or something like that. This was not true in 4E, where a monster could have 1 hit point simply because its job in the adventure was to be an easily-slain mook. The same ogre could be a solo monster or a minion depending on when and where it was encountered. Trying to apply that model to 5E would provoke a lot of backlash.
But that doesn't mean 5E can't have minions; there just needs to be a different implementation. Back in the days of yore, 1E fighters had a special ability where they got a whole lot of extra attacks any time they were fighting very low-level foes. That would be the approach I would take--an optional rule where any damage dealt by a character of level X or more, to a monster of CR Y or less, reduces that monster to zero hit points automatically. Instead of modeling the monster's frailty, you are modeling the badassery of the PC.
It's a mechanical sleight of hand--the end result is the same--but I think it would be a lot more palatable to a lot more people. In fact, now I think about it, I may have to try this as a house rule next time I run a game.