Modern pads don’t offgas or glaze nearly as much as old school asbestos pads did, so drilling and slotting is mostly just a cosmetic gimmick these days.
Drilling just makes rotors more likely to crack under use. The only place it actually makes sense is on a drag car or motorcycle in which case it will be a Swiss cheesed rotor with gaping holes, purely for weight reduction. (Look up Wilwood Ultralite rotors), and in that case you don’t care as much about braking performance.
Unless you are campaigning something like a Lemans or high tier race car that will punish and glaze even the highest temperature race pads, all slotting will do is wear out your pads faster. If you’re using it to compensate for actual brake fade and glazing, you’re better off using a hotter brake pad.
There’s not really a substitute for good old plain iron rotors on a street or track car unless you’re going for looks.