Lets talk about this. Slotted rotors or cross drilled rotors, do not disapate heat.
The slots and the holes are to disappate gas created by the heating and breakdown of the organic material in the brake pads. This breakdown happens at a microscopic level. Now on a regular rotor this gas build up could cause gas being trapped between the pads and rotors, which reduces breaking efficacy. The slots and holes give the place for the gas to escape which keeps the pad making contact with the rotor.
This is an effect that only happens in race conditions, high speed braking for long periods of time.
These rotors do nothing for street use, and can actually reduce 0-60 braking times, as proven on big brake upgrades on the S2000 and ITR.
As far as warping the rotors, yes you can just as easily warp them as regualr ones, because they are becoming hotter in some ways then your stock rotors because of the pads, and the less surface area causing more work.
In road race conditions it is quite common to replace pads and rotors every race. And these people are using similar setups.
Sorry I can't agree with you.