Three Mage Gate ?

[Felis]

...have you done T11?
It actually has something similiar - namely: Glowing platforms that used to require 4 people to stand on them to unlock the next way. All fair game as long as you were split up (the content forced you into groups of 4 and 4) but as soon as you had all 8 people together and had to do the puzzle with two platforms in the same area... oh boy, I've seen groups "fail" at that...

Not that this is a "bad idea" but I also dont consider it super intresting or anything like that... you cant bind it to jobs, in PotD you cant even bind it to roles, so it would become "Hey, everyone, stand in that spot for three seconds... okay, now we got MORE PotD to run, juhu!"

But that is already in PotD

Another idea to make Potd "fun" would be a mechanic from Cutter's Cry 1.0
Someone step on a trap (still PotD mechanic) and the party get force teleported in 2 seperate rooms (here begin the CC mechanic), where they have to kill all enemies, but the last enemy in both rooms have to get killed at the same time to left the rooms, or the enemies spawn anew.