I don't get why Konami decided the series needed a reboot.
Okay, I guess this did feel kind of unnecessary. Not only are there no returning characters (tbh I was getting kind of bored of Viki and Jeane but SOME returning characters or references are always nice), but they abandoned the concept of 'runes', including true runes, which have always been at the foundation of Suikoden plotlines. But I guess the alternative is pretty similar, which, yeah, kind of raises the question of what the point actually was.
I don't especially mind the whole reboot thing, so long as they don't abandon the already established world in any future numbered installments. And heck, with the whole Infinity thing, there is even a chance that Tierkreis could be absorbed into the existing Suikoverse. (or just pay $1.99 for the hero as Suikoden VI DLC or something...

)
One more thing about Tierkreis, though... maybe there were hardware issues or something, not sure how powerful a DS cart is, but it really really REALLY would have benefited from a 6-party battle system. I mean, for most of the early game you even have 5-6 people travelling with you, and the story just decides which 3/4 will be on your party at which time...

Actually thinking about it I know why some of the characters didn't join your fighting party at that point, but these games with insane amounts of playable characters are always better with 6 people in battle anyway.