Honestly I think that the Late Models will be the biggest "mini" class simply because it will be a box stock class, like the sliders were last year.
I want to run the "Outlaw" slider class because I can throw a brushless/lipo in it and run it all year without any motor hassles.
If I'm not mistaken, I believe that the Late Models will be run on the short track and the sliders will run on the big track.
Im hoping that some of the racers who raced sliders last year decide to run the "outlaw" slider class this year.
Who knows for sure which will be the biggest class but I would bet that the Late Models will be bigger.
my $.02