I personally believe that Aymeric is slowly shaping up to become Ishgard's GC leader ... but what will happen to the Bishop's seat?

Will it be something like Ul'dah where there's the head of state and GC leader or will it be more absolute in the sense that Kan E Senna is Elder Seedseer/ GC leader?

I am mostly interested if Ishgard will keep it's Theocracy or will it become something else ... like a republic?