TSLRCM tries to fix to the best of our abilities the issues The Sith Lords had due to being rushed. Containing a host of restored content and fixes many bugs left inside TSL giving you the most polished and best possible chance to get the full experience.
All I can think of is WOW! I can't even figure out how you all got the missing content but it is so amazing going into areas on Nar Shaddaa, watching Atton fight Sion, given the choice to kill your party on Malachor V, it's just amazing.