Racking your gear is great if your gear is rack-mountable, (with the ears on the sides) otherwise you've gotta monkey around with shelves and platforms and such. Potentially rather expensive. I built an angled rack for my recording gear and used two strips of solid wood to bolt everything to. This is nice because you don't have to worry about lining things up with industry-standard hole spacings. Also, with wood there's no grounding worries. But mostly they sacrifice form for function. A dolled-up external cabinet would certainly help though. But there again in an enclosed rack you have to consider heat and ventilation as well as the fact that it'll be dark and cramped for fiddling with wires. Lots of variables... I'd suggest putting it on casters, that way you can roll it away from the wall when fiddling with wires.