Two instances is hardly much of a 'tradition'... ...and it's a really, really stupid 'tradition'. Obi-Wan died because that was the ONLY movie and George didn't know what to do with him for the rest of it--not thinking "if I DO get more of these, I can have Obi-Wan teach Luke more to help him become a Jedi Knight", thus necessitating the invention of Yoda. Qui-Gon died because... well, because he was expendable. He didn't need to be in the film in the first place. He was a completely new character, going against what we THOUGHT we knew from the originals--THIS is the guy who trained Obi-Wan, not Yoda, THIS is the guy who discovered Anakin, not Obi-Wan. And for awhile in Episode I's preproduction, Qui-Gon wasn't even the senior Jedi...Obi-Wan was, Qui-Gon was the apprentice--tho still expendable. I really hope Arndt & JJ don't just go with what a lot of fans--probably ESPECIALLY casual fans--"expect" when it comes to stuff like this... "Well, Qui-Gon died in I, Obi-Wan died in IV, so Luke dies in VII". It's lazy thinking. I liked the way Star Trek Into Darkness turned out, but I still think it was lazy thinking to put Khan in the movie at all, because it's what pretty much EVERYONE expected, and MANY of those expectations were based solely on the fact that it was the second NuTrek movie, so of course many thought it'd have to live up to AND mirror the second original Trek movie.