I'm all for executing Revan! I've suspected him for a long time, ever since the first day, of being involved with the sorcerers. But it seems like you've mixed everything up... IMO, it wasn't him who killed. And the real killer is still out there.
Second, if we assume he's the one, why kill him? He'll die tomorrow anyway :)
P.S. I haven't quite figured out what's going on yet; I have some thoughts, I'll write them down later if you don't mind.
P.P.S. If it was a wizard who came to me with magical beer, thank you, I'm feeling better now :-*