Hmm I'm not sure how I feel about not being able to get the kit without the motherboard. Some people may not want the chipset/manufacturer of that particular motherboard, or may already have a mini-ITX board they want to migrate over to Bulldog.
Of course, if I'm wrong and the motherboard is a special form factor for this specific case that regular mini-ITX boards won't fit in it, then that's a different story. I'm liking Bulldog overall, so far :):