I voted for Story, graphics and camera, that's the only thing I really liked about TRL as a TR game of course, as 'just another game' its rather a good game. All the TR elements were virtually stripped out though.
The story was the 2nd best the series has seen since its inception and only falls behind AOD, but that was just because AOD's seemed bigger than TRL's and the whole backstory change thing... its just a shame Legend's story wasn't featured more prominently in TRU.
The camera worked well both fixed and free plus it was fresh to the series and bettered what was set up in AOD with the camera system.
Graphics, for their time were, of course magnificent.
It's been a long time since a came around, been a long time but I'm back in town.