EAC doesn't seem like it would have anything set up for an autoloader like the Nimbie, but dbpoweramp does; on the other hand, the major music-sharing groups seem to prefer EAC.
Sadly, there's nothing out there that will be relatively accurate and precise when it comes to extracting beats per minute, key, and the nebulous "energy" characteristics. I would love to have those.
I think I will also have to work to do things like pushing lyrics and artwork into the FLACs, seeing what metadata "makes it" in the re-encoding to something like a 320kbps MP3.