I had my characters well developed personality-wise, though I have to admit that I (later on) made character sheets for them, but after being warped...
I agree on Obi-wan. One thing I note with both him and Gandalf is a small infusion of humor in the character. I think it may be important to humanize...
In my WIP, one of my chapters consists of several characters talking for the majority of the time. How can I prevent this from getting boring without...