I think that this would be a good idea, so long as there is a limit on the size you can stretch the brick and that it is kept to whole pegs. Also, lego ramps with a slope less than the 3x1 (i.e. 4x1, and ,I think 5x1 also) do exist, as well as the two-spaces-tall ramp. But yes, measures should be taken to prevent it from getting out of hand like RTB's Editor Wand, such as stretch limits for brick types, and preventing round or special bricks from being stretched.