Pantheon is not a single person. Even before the rework, the lore of Pantheon was that when Pantheon died, and he could in fact die, a new Champion of Targon was chosen to become the next Pantheon, and the memories and skills of all the past warriors were passed down from one to the next. 

Even the current Pantheon, his character is built around the idea of having this immense, god like power, but being determined to be, just a man. To do everything he has to do with his own strength, not the strength of a God.

I personally find that to be an interesting character trait, the struggle to succeed on his own merits, but unable to escape the fact that he does in fact have that power. 

Pyke can be played before, or after death. After death I considered him still more of a vengeful person, but not necessarily evil, just evil against certain people. But then again, I admit I didn't look too much into his character.