In an ecosystem like Switch's where niche RPGs can find pretty decent success proportionate to that kind of title, I think GS stands a chance.Golden Sun TLA my fave game all time but honestly I don't think there is an angle for Golden Sun to thrive in the current day. I would love to be wrong but yeah. In battle class changes due to magic casting + top tier dungeon design feel like hard features to sell a new fantasy RPG on. But yeah Air's Rock forever.
But it depends what system it comes to. We'll have to see if the next Switch is as kind to these sorts of games as the current one, or within the same realm.