Other than generic office PCs, every system I build gets a name, usually one that reflects on the person for whom it was built. This PC I would name "Wastrel." It is not a professional's system, but might be built by the professional's spoiled kid.
This machine was a gamer, that can also handle [some] professional work; it needs to be a professional's PC that can also play games. To that end:
1. The shape of the case did otherwise say "Engineer," but please lose the window.
2. Make sure the graphics card can handle GPGPU processing. Kepler isn't it.
3. Provide for greater data safety, such as with RAID1.
4. Not mentioned in the article (so it may have been), but make sure it is quiet.
5. No high overclock. Efficiency got short shrift with this build, and I'd be concerned about stability over long days of work.
To repeat something I mentioned in a past 2K SBM article, please provide context. Before the build, describe the person who will be using it; be as arbitrary as you like, but please describe the user. That will ensure a fitness for purpose. My personal interpretation of this one, which could easily be different from someone else's, is that this PC may not be the best fit for its purpose.
Finally, it would be interesting to see what sort of purpose-built bitcoin miner you could create; e.g. high-end mobo with at least four PCIe slots for graphics cards, as many high Mhash/$ cards as will fit, likely coordinated by a Celeron or Pentium (or AMD; the determining factor will be the mobo, whatever can hold the most high-end graphics cards).