Hi! I purchased the iTunes plug-in, after trying it out with my Shure SR530s, very impressive stuff to say the least. I'm quite curious as to how (in detail, being a software engineer and musician) this technology works, i'm guessing you don't want to disclose that sort of information, fair enough. However, I also own a pair a Grado RS1s open-rear full-size headphones, and i'm sure a custom profile could help them gain some soundstage since none of the available ones target hardware remotely similar to these cans. I'm guessing that this profile would fit the RS2s larger brother, the RS1s, quite well, since they sound very alike on every single rig i've tries them on. Anyhow, congrats on this release, and you should in my opinion release a development kit of sorts so people like me could write their own profiles, and even share them with the world, so you guys could work on making a awesome new release instead of building dozens of profiles targeting only very few customers.
Cheers.