Not critical, but something that may be a cool addition when you have time.

Basically a function that allows you to install Win 7/8 from the iso (or whatever) to an HDD, be it "internal" (= in a hotswap bay) or USB HDD. From within a working OS (Win 7/8 or XP). Maybe with the option of running sysprep afterwards to prepare the thing to be placed on another machine.

I found a guy that did write a bunch of scripts that do it. here

You can try this:

http://www.msfn.org/board/topic/149612-winntsetup-v22/

Yup, the creator of WinNTSetup added the same functionality to his program.

He even gives credit to Fujianabc (<-the guy I was talking about in the OP).