I voted the "creative" option. But when you do that option, you are playing with fire, as diferent organisers have diferent interpritations and will only accept differnt interprotations.
the reliablity thing is far to open to abuse. running a gtr over it injector duty cycle will make the car unreaiable, so can i run bigger injecters. Letting early (light) evo's up their gearbox is unfair, they are light for a reason, because they are shit. But if you give them a relible drivetrain, you can easy get power out of them. Then you have Evo8 power, but -200kg. The reliabliuty rules need to be spelt out, so genuine relabilty things can be addressed (sump baffles, and oil coolers)