Spartacus is one of my favorite films, so the lackadaisical treatment it has gotten on high def has been particularly annoying to me.
However, there is apparently a new restoration of Spartacus that will be premiered along with Apollo 13, The Hunchback of Notre Dame and Steamboat Bill Jr. at the 2015 TCM Classic Film Festival.
Hopefully this will yield a new transfer that clears up the problems with the previous high def issues of this title.