I think a combination of gameplay is a good idea then u should play with the values to find a good balence.

I did notice something when playing I think it's a glitch but maybe you did it on purpose. You said that when a ghost enters a castle that is occupied by the other team. They fight and have a 50/50 chance to win. However I noticed that even if the ghost attacking the castle wins he is also killed. He should stay and fight the next guy. For example I sent 5 ghosts to an enemy castle. And 5 ghosts were killed as I could see them coming out the top of the castle. But 3 of those ghosts were the enemies. I never saw all five ghosts I sent come out the top of the castle.

I hope u understood that. althoe maybe you want it that way.maybe the ghosts in there own castle should have a slight advantage. Anyways keep up the good work I can't wait to try ur new version