Trader, this is awesome, you're doing great. I can't wait until you finish.
Will it be a default brick?
No. Basically, this minifig brick is actually serving as a test case for a model-to-brick conversion program I am developing in Python. I've tested my converter on several less complex bricks (like the 2x2 ramp) and I converted that sphere / orb model that Kaje whipped up for me into a brick as well. I wanted something that was more of a challenge and I decided to make a brick out of the minifig. Now, since the minifig model wasn't designed with my converter in mind, it takes a little time to adapt the model to the conversion process. That's what I'm doing now.
Up next, hands and shoes.