the way of the samurai series is the best rpg series of all time. 3 was a huge disappointment in that regard since it made the world feel like it revolved around you, rather than your character taking action to stop a crisis. If they refined that system i think i'd probably die from replaying it forever. if it doesn't, then i hope 5 does- i really enjoy the world moving on without you aspect of wots the most because it gives your actions truly significant impact that is better than literally ANY other rpg.
I don't know if WOTS4 has the same format as 1/2, but i really hope it does. the 'best' ending in that one still requires you to draw your sword a bit, but it's usually in self defense rather than in attack. My favorite is 2, because it's the one i've played the most extensively. I'm going to buy a ps3 some day just to play that game, no fucking joke. Imagine my disappointment when WOTS4 came out on ps3 only.
I am a giant fanboy of them and actually bought a XBOX 360 because WOTS3 got announced fro the xbox originally with no signs of a PS3 release. This is one of my favorite parts of WOTS.