Hello, team!
I'm glad to see you're picking up the mailing list for architectural decision making (win!); but you might want to familiarize yourself with:
http://linux.sgms-centre.com/misc/netiquette.php
In particular, point 9 is especially salient here. The issue isn't just one of courtesy, but as a project grow or when you join an extant project with an active developer community, you will find that those conventions tend to be the "social grease" that allows a high-volume mailing list to remain reasonably useful despite the decreasing signal to noise ratio.
On the substantive front, you've been throwing around some really good ideas on the wiki; and I was wondering how much /technical/ guidance you wanted? I'm happy with letting you proceed independently and arrive unguided at a design -- keeping in mind that we are aiming for a first prototype in March at the latest -- but I will gladly help with constraining the solution set if you feel you are floundering. Do not hesitate to ask for help!
I look forward to meeting you and working up a big step forward next weekend!
-- Marc A. Pelletier