Well, i'm definately interested. I just usually don't reply if i don't have anything to contribute, less useless posts hiding the useful ones.
I still don't get why unself isn't working properly, fail0verflow could probably fix it if they were interested since they have it working for firmware files. But we probably won't see any signifigant releases from known developers for a bit.
A git repo certainly wouldn't hurt.
STOP! Before you ask questions... READ the first post! RTFFP = Read The F*cking First Post
Yes, A 3.55 "jb" (cfw) is available, no >3.55 "jb" or cfw yet.
Yes, A 3.55 downgrade is available. But not to lower than stock firmware! (What it came with)
No >3.55 downgrade is out there yet.