I do not think they should be overclocked but they should have a similar slider to increase or decrease their jump height ratio.
Personally I think jump pads sucks, sorry just my honest opinion. I see them as a quick fix by the devs to go up higher and faster (the lazy way). A express elevator would be more cool and safer and could stop at the correct floor.
So, no for overclocking but a option slide bar to "underclock" them.
For very tall factories, I think a elevator would be much more nicer.