Nemesis Destiny
Adventurer
I agree, but most well-built tactical encounters should make "clustering up in a hallway/holding the choke points" a bad idea. No need to worry about punishment, since the fruits of their bad plan would do that all by itself....if they come up with a good plan, even if it is kinda obvious, they shouldn't be penalized. I don't know how many encounters I have thought were going to be very challenging, only to see the players come up with a brilliant plan on the spot, and kick the crap out my bright idea...I just tip my cap and mutter under breath...."we'll see how good you do next time"
Granted, holding the choke point is a valid tactical option sometimes, and can be very dramatic and exciting, but the OP was complaining that they were doing it all the time, and it was becoming boring. It should not be the default "go-to" plan of action in most encounters.