Is Swizzy's tool still available somehwere? I'd like to try it out.
I've noticed a few issues with exiso. If the case is different than $SystemUpdate in the ISO it doesn't skip it.
It shouldn't be too difficult to fix that issue. I have a copy of the source code. I was looking into adding RAR/7z support to it as well.
I loved Qwix for the original Xbox. There was no need to unrar to extract and ftp an ISO with it. Would be nice to have that for the 360.
I have also noticed some issues where FTP can't create a file on the 360 in some cases when transferring over a game.
Is the source for the FTP plugin available? I'd be willing to try and figure out what the problem is with that if I can get a hold of it.