Mobility is a virtue, yes! And if necessary, you can always jump out of that spot and to a different one. But if one of you misjudges, missteps, or gets overwhelmed, that's extra pressure on the ones with you to help out -- so standing back to back to back is a good basic strategy when you don't have a more developed one.

[This all sounds very sensible and wise, and indeed it comes from both lessons passed down to him and a great deal of experience. It might even sound sagacious and persuasive, were Chaosbringer not furiously trying to shake a mushroom-Torment off one of his boots during the whole thing.]