I always like it better when the rules establish parameters but leave the actual designing up to the students.
There's nothing in the rules that specify the design of the ramp, just the 'parameters' that a ramp must be used and fit within certain dimensions. We decided that the fundamental aspect of this event is to utilize a ramp to launch a vehicle. It's no different than in the past where we established 'parameters' such as using a mousetrap or electric motor to launch vehicles.
Taking your argument to the extreme, I guess you don't like any of the tower building or the flying events like helicopters and wright stuff because they specify specific 'design' criteria that must be met, such as certain weights, dimensions, materials, etc etc.
There is place for events in which competitors are required to build a specific device. It is my contention that there is also a place for events in which a goal is established, but the specific device to be constructed is left up to students. Whatever the variety of ramps that is produced, it would be difficult to argue that it would as great as the variety of ramps, hammers, pulleys, spring launchers, crossbows and what have you. Scrambler was my favorite event of all time, marred only by the element of luck introduced by the egg, and I was very much hoping that this event would be Scrambler without the egg - thus my disappointment. I am not at all saying that this is a bad event - just not the one I was hoping for.
I am curious about section 7, though - traditionally, scoring has been the last section of the rules, and scoring is section 6. What was supposed to be in section 7?
Also, I assume the the "inside edge" of the tape referred to in 4.b refers to the edge of the tape closest to the Target Point. Does the Launch Area referred to in 4.c begin at the inside edge of the tape, or the outside edge?