Well, we're on the way down. The franchise will be a shadow of it's former self within the next decade.

So what would a spiritual successor look like?

I imagine a SRPG setup, with monsters that have high customization, ala manual point allocation like SMT,

3 modes of battle as well.
>Classic 1 on 1
>Fire Emblem-esque map conquest
>Party of 3 vs a boss.

If these three modes were combined into a game effectively, I think it would lend to high replay value.

What are your ideas?