I know what you mean, like i havent done many shuffle races, but they seem to be very like regulated(i think)
where do i vote mate??
Shuffles are limited to Comfort Soft tyres so cars with more than the 220hp? maximum would probably be a disaster.
I do think shuffle races would be improved with the ability to select sports soft tyres, as i never know if some oaf just thrashed into me, or someone lost grip.
I've always thought that more could be done with shuffle races. A few possible selections could include:
Kei cars
Supercars (e.g. RUFs, Ferraris, Lamborghinis, Paganis etc)
DTM cars
JGTC/Super GT (both together would work but obviously GT300 and GT500 would come under different selections)
Le Mans (both Group C and LMP together)