Couldn't you just build maps that use other, more fun gimmicks? I mean, those of you that CAN can use it SHOULD use it. However, you should be using it to play the map differently. Requiring such an advanced technique is really pointless, because you're keeping quite a few players from being able to finish your map properly. It just isn't good level design.

Well if you had actually played through Portal to look for an example instead of just bitching, you might have noticed that in the BTS section of the game, you are in fact required to jump and then crouch. The section where Rocket Turret appears, you have to use it to blow open the cube travel-system-thing so a cube falls out. You then use that cube to crouch-jump into the vent.

Disproved, end of story. All your points have just been destroyed. Good day.