Tony Vargas
Legend
I think you're trying a little too hard. The Astral Sea encompases universes. It's infinite. There could be unlimitted numbers of Astral-dwelling critters in it, but it's so vast they could never gather any bigger a force together than is convenient for your story. The armies of Hell and the Abyss seem all but infinite, too, but it doesn't seem to upset the balance in their conflicts. It's all very conceptual. The Astral Sea and it's more out-there realms could even exist outside of time. The Blood War raging on matter how many adventurers from various infinite parallel prime material planes happen to resolve it one way or the other, because it's a conceptual thing, not an actual event. :shrug: