So, we all know and love IC2 machines. But what if at the start of the game (when they're easy to make), the machines are larger and slower much like what older machines were. Then as you build more and more advanced things, smaller machines will come, until eventually you have an extremely efficent machine that is really just a boc, but with a tool inside...
I would quite like larger machines, it would make it feel better. And instead of a block shape, the models can be starnger...