Warn them they are not up to par. If they show any interest in doing something about it, help them fix themselves while preserving their concept. If they decide they want to try anyways, let them. Throw stock MOBs at them. They'll get slaughtered over and over. They'll whine you're setting out to do this on purpose. You show them the exact stock MOBs after the fact, making a point of illustrating how they're only at your level so as to be a routine encounter, and have not been changed at all. With special emphasis on how they should be able to handle 4 of these a day, every day without any significant risk. Bonus points if the MOBs are actually lower level.virgileso wrote:If you find yourself in a group where all of your players make unoptimized characters, what do you do with them? Do you warn them of the danger, then proceed to TPK them until they start making characters worth a damn? Do you refuse to run a game until they make a character (or let you make) that won't trip onto its own sword? Do you pull your punches or hand them artifact swords, steadfastly refusing to call it 'D&D', instead calling it 'my campaign'?
Do not change anything, do not use higher level MOBs even though 40% of them are supposed to be, and just have them use basic abilities intelligently. So auto attackers just spam auto attack, creatures with a save or die/lose effect use that, etc. They don't even have to work well together. Bonus points if they're supposed to work well together.
It takes very little of this for any reasonable person to realize you aren't being a douchebag here, you're looking out for them. At which point they stop being stubborn and listen to you. And you stop holding back (use the harder enemies sometimes, enemies with teamwork, enemies that use their standard treasure share to help them do whatever...) and instead of getting slaughtered over and over, they actually get to accomplish things and fucking do stuff. There's actually a purpose to their existence within the game world.