Stuffing an ATX motherboard in a microATX case

I feel like starting a little project. I'm really tired of big bulky atx cases, but there are no good microATX motherboards. Can't I just stuff the power supply toward the bottom front and have enough space for an ATX motherboard? I realize the entire back and mounts will not line up - that's where the 'project' comes in :) I think if I cut the top off the back panel and slide it up it just might work.

The victim: ASUS TM-210 case