For one thing I don't have Eclipse, don't know Java, and don't have the time it would take to learn Eclipse enough to add a plugin for FPC to it. Maybe someone else already has this knowhow, but not me. I can, however, make a mostly functional skeletal psuedo-IDE within about 90 days of work. (I'm being conservative because I haven't tried yet.)

Development cost isn't so much the issue as is supporting myself. I'll just have a different idea to do or something else to work on that can support me, comparatively, so I kind of have to make this slightly competitive -- even if I do it in my spare time. It's a problem of time that I could be making money in, putting myself at risk to develop a budget FPC faceplate.