I don't think BW's going to screw this up. They're great story tellers. Revan's death must have a purpose. He's such an iconic character, loved by many, and one of the points most people look forward in this game.
So...I feel like there will be more to it, but even if this is the end for Revan...he did his part, for more than 300 years!
Even Anakin died at some point after completing his destiny.
Hopefully BW won't change the story after people begin to QQ about it. I sure hope not! Look how Blizzard butchered the Warcraft universe because of that.