NOT the tools that rich BC/TBC/OBCers buy all the time, I mean the machine components. I think we should ave GearParts, like Cylinders, Wedges, and Spheres, but useful in making interesting machines, scenery, and loads more. They would look something like this, but resizeable and made of one piece each:
http://www.roblox.com/cog-system-item?id=25786453
Indeed. It would allow more complex constructions in a sensible way. Insted of making only the Big Ben exterior, you could make the interior with all the cogs and chains and whatever exists inside of it.