I would say clearly you are not the target audience for the new Mac Pro.
Get a PC.
Well I already own 2 Mac Pros personally, not professionally, but while I like this machine concept idea, it doesn't really replace either of my 2 Mac Pros.
Requiring extra cables/devices kind of defeats the purpose of it being a Mac Pro. Sure it's cool looking, faster, but it won't completely replace either of my 2 Mac Pro's without extra add ons.
I guess my point is that the new Mac Pro won't replace the old Mac Pro. It's an entirely different animal. It reminds me of the next generation of the G4 Cube, but on steroids.
I'm not saying it will flop. I'm just saying, like Steve Jobs famously said about Blu Ray... It's a world of hurt. I'm saying too many hoops to jump through to get this machine up to what I already have and too many add-ons to buy for it to be a true Mac Pro.
In my mind, and maybe I'm stubborn, it's as if Apple has just outsourced the Mac Pro concept.