I don't think that pure pixelart would be a better process to achieve the result he is trying to achieve. Dodging and burning are powerfull tools to make quick ajustments and refinements, that would take much more time by picking new colors and re-pixeling entire parts. Obviously pure pixelart can give more sharpness and control of edges, but with a few refinements he can achieve the same. So, I don't believe this process is worthless, silly, nor a worst way to do things, it's just a method that can be more confortable to some people.

If you aim at process (push your skills), that's what pure pixelart is all about. If you aim at results, pure pixelart is not the only way. Any non-pixelartist can hardly tell the difference between the original from Redshrike and Ptoin's edit.

*I'm a pixel-purist, and this is not a method that I use.

how about creating something similar to this but with pixels?
http://zoomquilt2.madmindworx.com/zoomquilt2.swf

maybe with an increase of 2X zoom in every following pixelart.

supposing that it is workable, in theory it can have any lenght, with any number of entries. (course it demands a minimum)
It just needs that someone make the last image bridging with the first to loop endlessly.

Edit: didn't know the same idea was posted in the Hexquisite Corpse Suggestion Thread, meh

my entry for the "Bring Your Vision to Life Contest" by Wacom and Devianart.
tried to mix differents medias, PA and non-PA:



it's available in a bigger resolution here:
http://animmaniac.deviantart.com/art/evil-hug-of-a-lovely-beast-123095223

*you can help me by adding it to your favourites if you have a DA account and you think it deserves

Started to work on my tiles. Still very WIP.
Need to think in new elements to add and give more detail.

{15-37-38} plz.

Let's see if I finish mine this time.