Good guestions, maybe I should elaborate a bit more on my original post...
I'm specifically looking for 2D artists, an "artist for hire" type but in this case for no money.   :-)  You would receive credit for your work of course, and if in the future something were to be pay-ware you would receive royalties.  I would provide the requirements (size, color depth, etc.) and concept and/or rough mock-ups.  They would provide the creativity and art skills...   Artwork would consist of sprites, backdrops, etc.  For Amiga work the format would be IFF.
As for milestones... Sometime, someday, I might release something.  :-P     To be honest, this is just a pet project and with recent twin babies it's kind of low on the list. 
I'm mainly looking to establish some contacts for future projects..   I develop (well manage developers now) business apps for a living, but in my spare time I enjoy writing little games for computers and PDAs.   I'm  actively working on my iPhone development skills, but the Amiga is a fun diversion.  But developing for either one I run into the same issue, "art skills" and my lack their of.   So I'm hoping the contacts I make on this forum may be useful for other projects on other hardware too.
As I said earlier, if you would be interested drop me a PM... 
Thanks!