Art, you want the pot stirred a little.....
Keeping the track the same, good idea (but gets boring on anything but a permanent track).
Maybe try a track design that doesn't have 100,000 180 degree turns (ie balance out the types of curves on a track, like real tracks do). No excuss for having 22+ sec laps (by 1/8 scales) on a track of the size of Invesco. A flowing track makes for close racing and gives everyone a chance to win (at least once in awhile). Stirred enough, probably not.
Grenade - you're going to scare me. 1/8 scalers wont be at the track on Aug 3 (GLC race is that weekend; and we'll all be there)