Which 'faction' do you thing the "True Sith" that Kreia spoke of belong to? She said something along the lines that "...but in their heart of hearts, they never forgot about the Jedi..."
(I) Most of Ludo Kressh's forces were destoyed and Naga Sadow's remnant fled to Yavin, in the aftermath of the Great Hyperspace War - but it is possible several of these groups escaped and thereby re-established over the next 2000 years?
However, as you said, these Sith forgot about "the Jedi Order and the Republic existence became a myth until Marka Ragna funeral that lead to the Great Hyperspace War and the destruction of the Sith Empire."
(II) So couldn't it also be possible that these 'True Sith' are descendents of the orginal Schism approx. 20000 years back (and thus have an undiluted hate for the Jedi Order and their Repbulic), but are unrelated to Marka Ragnos' Golden Empire?
I'd like you know your take on theories (I), (II), or other pertaining to the 'True Sith', Drak.