Most definitely will help in assisting the remix/production discography - am working on one at the moment (purely for fun!), which I should have completed by late Sunday...
BTW, the Arthur Baker and Wendell Williams mixes can be lumped together in this release:
12 Criminal Element Orchestra feat. Wendell Williams everybody (ultimate state mix) / ultimate instrumental mix uk/90 1/1 deconstruction pt44074 - produced by Arthur Baker / remixed by 808 State
With Criminal Element Orchestra essentially being another pseudonym for Arthur Baker!
And with regards to Soundgarden:
"Two different remixes of "Black Hole Sun" were completed by 808 State , but Soundgarden decided not to release the remixes to the public."
So, they exist, but not on any release... yet!
Will be in touch!