I will answer them from topic to topic :
Different Track :
The track is different in all rounds , so i dont see your point here , we dont know how the track will be made until its made on the same day as race at 6 pm , only than u can walk to course for 1 to 2 hours and no driving is allowed.
Sports Cars ets :
There were 42 entries in total so we had 40 cars indeed , now u talk about sports cars , well most of the sports car drivers dont take part because they dont know how to autocross and can only drag , 2ndly Autocross is based on driver skills and the cars handling , the big sporty cars arnt meant for autocrossing and the ones u saw might look ordinary to you but they arnt as most of the cars handling is tweeked with coil overs / bushing / shocks / sway bars / strut bars and slick tyres , those things you dont notice at all and for your info , the slick tyres alone are for 200 k + to start with so figure how much work and money is put into them which is not noticable to the ppl with not much autocross knowledge.
Talking about the ppl , well its karachi , that will remain there and u and i both have to live with it.
again its your personal opinion and i respect it but u need to see the bigger picture bro.