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.
This review may contain spoilers
While this restores a lot of interesting content, there are places I can see why things were cut. HK-47's solo mission for example, once the 51 models are activated the game becomes unbeatable, they are much tougher than their 50 counterparts and come at HK in such huge numbers. Only through cheating could one get past them. This should never be so. I don't understand why he goes into the droid facility alone, with at least other teammate the odds would be fair.