Rick,
Great question...the lack of developers is always spoken about, but maybe this thread will help with bringing some understanding to what individual projects, or even what types of projects need help, ie device driver mention for example.
From a personal perspective I have a fairly large library of MJPEG video files that I badly need to convert to something like MP4. To do this I am using AVxCAT (awesome app) and Dave's drop of ffmepg (3.0.1). However, the ffmepg release is showing some problems with memory consumption. Subsequently Dave has exchanged a couple of emails with me on the subject of building a working compile environment. Hopefully within the next couple of weeks I will be able to provide some updates on this.
I would love to become a maintainer of the OS/2 port of FFMPEG...can I do it??? Not sure yet, but worth a try. It would be great for this thread to continue and maybe even build out to a general Wiki like documentation of what "standard" baseline development environments are out there, what is needed, etc, etc...