I guess you have your 8 TOR characters to develop into what your Revan and Exile were supposed to be (within their respective backgrounds and storylines). Have the Jedi Knight character become your Revan 2.0 and the Sith Inquisitor character become your Exile 2.0. ...or something like that.
Regarding choices vs. canon for KOTOR & TSL to TOR, there were ways to include the fates and legacies without really delving into the topic. Most of the canon stuff that trickles down into the game involve the characters themselves instead of the galaxy they shaped. I guess it was easier to just rub canon into everyone's face.