My PC is full of air and unoccupied slots and bays. I have four 5.25" optical drive bays that I don't use. The top one houses a DVD burner, but I can't remember the last time I stuck a disc in it. I moved to Canada over three years ago, and I'm positive that I've never purchased a blank DVD in this country.
Half of the expansion slots on my motherboard are set dressing. I only have a dual-slot graphics card and a sound card. In fairness, I use five of my six hard-drive bays—but that's because I'm still holding on to old drives, including a 320GB WD Caviar SE16. If I were to build a new system today, I would probably need just two 3.5" bays, with one 4TB hard drive in each. Add a 2.5" solid-state drive for my OS and applications, and I'd be set.
I'm sure I'm not alone. In fact, I'm willing to bet the vast majority of PC gamers and enthusiasts out there have just as much empty space in their PCs. Oh, don't get me wrong; leaving room for upgrades is fine. However, in the age of laptops, iPads, and smartphones, it seems a little strange that we should all have humongous mid-tower PCs full of air.
Over the past few days, I've been trying to picture what a modern desktop PC ought to look like. We could redesign everything completely, of course—introduce new form factors all over the place and wind up with something close to perfection. However, I think we can already improve things greatly with a few simple, practical steps: