I am a bit biased because I love the Saika Ikki theme in Japanese history.
While anime in itself is pretty bland, I watch this for the travelogue after end credits :)
Still, it's nice to see someone took up Saika Ikki and made an anime/ manga/ show about them, because they lack attention in all the Sengoku Jidai- themed media. You can only see them in video games and that's about it. They were a pretty cool group and they definitely need more recognition! Hell, I once did a manga spinoff of a game where they appeared to explore their story because I was that desperate.