Have you done the spider-pit (level 40-ish or so) run on Inferno yet? I just kept dropping the 12,000 damage bombs, retreating, igniting, repeat, until there was only one spider left. Peek in, snag weapons, kill last spider (who frequently killed me at the same time, but it give you a win anyway), repeat. I got the ultimate turret that let me lay down 10 at once that way, and it's great for major crowd control.
I wish there was a way to give commands to the troops through the plus pad. A simple "Hold your ground!" would do wonders, as would "Follow me!" The troops are surprisingly useful when they aren't running straight to their deaths, or jumping right in front of my rockets.
James

