Amusingly if I'd chosen this ambition and then chosen this ending my character would have basically just been going home. Having all the treasures of the Neath yours for the taking while still being able to live in your homeland, visit your friends and family, eat REAL food instead of mushrooms, "turnips", "potatoes", and other less identifiable remains? I'm not sure that you'd be gaining the "most" by picking this ending...but it feels like you'd be giving up the least. That has value too.