Now its imperative to have S6 before any spinoff, we all need it, but i think that Tierkreis was a good game and if a sequel is on the way it will be welcome. They really need to think about the future of the Suiko series, if they leave the main series in favor of Tierkreis it would be a major deception, because the Suikoden is a rich world that needs a LOT of answers that the previous games left. The infinity can wait some more time.
Let our mercy as deep as the Feitas and our authority as powerful as the Sun be revealed to the entire World!!