(NOTE: discussed in email, but figured I should post something here as well.)
Personal opinion: If you let the lack of E-Control stop you from purchasing an H8000FW, I think you'll miss out on a truly great effects unit…
That said, I don't own Pro Tools, so I won't be making an RTAS plugin, at least not for the first version. I have been primarily a Mac guy for audio apps and I use
DP and Logic. I also have a PC, but so far the only application I have
for that is Reaper. As time goes on, I hope to add other applications to develop with, including Pro Tools.
At the moment, my remote control application is completely stand-alone. That is, you start it up as a separate application and it communicates with the Harmonizer directly. After I get that program working well and published, I will start adding features. Making a plugin is a goal of mine.