88?
[HEAD EXPLODES]
I don't think anyone at my table wants that. The biggest fight we had was when I was running the Skyreach Castle thing toward the end of Hoard of the Dragon Queen. The PCs were disguised as cultists, and realized that right during the middle of morning prayers led by some cult big-wigs in the courtyard would be a good time to reveal themselves and just attack...everyone at once. 50 cultists, a couple of evil wizards and clerics, some Ogres.
Weird thing is it worked. Fireballs are pretty handy. One of my players is a wiz (heh!) at playing spellcasters, and knows what spells to cast and when. The halfling barbarian was a killing machine, too. It turned into a running battle as the evil leaders realized the tide was turning against them.