Awesome. Not that I have time right now but I have always wanted to bring Swiki / AniAniWeb into the present. This would be the right foundational work to make this a useful reality.
On a side note, I apologize for all the bad qualities of Pillar markup. Back in 1999, I created ComSwiki out of the beginning that was PWS Swiki (the first wiki to eschew camel case for links). One of the first things I did was to make changes to the markup to improve it. Of course, once we had some users and established content, all the decisions I made at that early point in the project were made permanent. Looking at Pillar, it pretty much uses the syntax I created back then (with a few improvements). I'm sure the markup just drifted through the Smalltalk community and was then adopted by Pillar. It's not a bad design but I've always felt that a better, more extensible syntax was possible. As usual, the good proved to be the enemy of the great.
Cheers,
Jeff