I've been thinking of trying a list with Rhymer and 10 basic TIE fighters. Basically stay together in a ball to protect Rhymer, prevent anyone getting close, overwhelm enemy fighters with sheer number of dice, and though they're not bombers, 10 blue dice at medium range will do some serious damage!
Thing is, if someone flies a ship right into the middle of this ball of fighters, only the ones in the middle will be placed touching the ship. What happens if they have no place to go? Are they destroyed, or do other fighters get moved out of the way to accomodate?