Well, I respect your opinion but I COMPLETELY disagree! Sure TSL added a few nice tweaks to the play system but that's about it...
I think KOTOR has MUCH, MUCH, MUCH more replay value than TSL! Let's consider the characters for a moment: Not as many in KOTOR, but they all had a purpose, they all had quests that fleshed them out, they were well acted, written and executed. In TSL the characters, for the most part, have NO quests to help develop them, their dialogue is circular and non-sensical and as far as I can see, most of them contribute NOTHING to the story in any way.
I really can't overstate how BAD the dialogue in this game is! It reminds me of poorly written and incompetently translated Anime! It just goes on and on and on.... most of the time contradicting itself and making no sense at all.
And as for side quests in TSL... Where are they? Really, if I missed them, please let me know!