Agree, even if this information might be of help for existing developers, we sure could need more people to develop for eCS and as well there is need to provide why they should. This might not be the easiest mission to get people outside the OS2 community involved.
It might be a good suggestion to open up a bounty to set together a proper working development platform for the one who really wants to get involved. Proper package with the needed tools, utilities and documentation. This might already exist, but then again, I've noticed once a while that people ask for this kind of info frequently.