Hi guys, I'm a bit uncertain and kind of frustrated at the moment, so I figured I'd post here and ask the question.
Here is another very brief post which essentially asks what I want to know.
http://puredata.hurleur.com/sujet-3725-pdvst-fxpansion-vst-rtas-adapter
(I'd love to know how that resolved for you Dan by the way.)
Is it possible to-
A) make a PD patch into a working VST, then
FXpansion it to RTAS for pro tools?
I've developed this patch for so long as a hobby, and this is all that stands in my way. I have to admit I have my heart a bit set on it. I can implement it as a mac app if I have to, but it wouldn't have the same functionality or elegance.
I don't care if its hard, if its doable I'll do it.
Is the pdvst up to date and functioning?
I hope to hear from anyone who knows something about this. Once again thanks guys 
Fingers crossed!
Once you make a VST, you can check if it works via RTAS adapter, but another (better) option would be to contact one of the Digidesign-certified smaller developers, and offer them to translate your plugin to RTAS; I'm sure it can't be that much work once it's made as a VST already. libpd seems like it's here to stay, so I'd use it anyday over the (probably) abandoned PdVst. Good luck, and post back if you hack anything together! I'm still only planning