I noticed that nobody answered your question on death. And here is a long story...
Once upon a time, there was a company named Obsidian who had the courage to take up the responsibilities to assume the hold Knights of the Old Republic from the wise Bioware. Unfortuantly, their masters, Lucasarts, rushed them during the creation of their game. A few portions were cut and many fans were disapointed. Pointing fingers at both Obsidian and Lucasarts. Poor Obsidian, attempted to fix this but Lucasarts was filled with greed and refused to allow them to create a patch that will add the portions. But then a team came up and restored the ending. (they are still working on it...) But for the question, the only ones who CAN die on Malachor V WITH cut-endings, are Atton, Handmaiden, GO-TO and Kreia. Atton has 2 death sequences, one where he fights the Disciple and another when he fights Sion. It depends on your infulence with that character and others. There is a way for him not to die though. Handmaiden only dies if you had more influence with Visa (in which they fight) and GO-TO deactivates from the orders of HK-47.