Textile instead of 'Pier Syntax'

Hi Folks, I was fairly excited to stumble across Pier as this is a system that I was actually intending to write for a client. There are a ton of CMS's out there, but none of them as far as I know allow one to edit in place the entire system, other than say CMSbox, which is out of reach where I live. I envisioned a little more Ajax+Scriptaculous goodness in the update process, and also a preview-accept transaction in the editing process. Since I use Ruby on Rails in my day job, I was intending to use that as well, since I know it well, and I'm only getting started using Seaside for toy projects. Pier seems to be pretty much what I need out of 'out of the box', excepting the points I made above. However, I'm curious why 'Pier Syntax' was developed instead of using an already popular markup like Textile? Are there any plans to use other markups besides 'Pier Syntax' ? I haven't looked at the code yet, but if there are no plans for any other Markup, how hard do you think it would be to implement a different markup besides Pier Syntax for a professional programmer that knows some Smalltalk, say like, oh, I don't know, Textile? :) Thanks! DZ