Tayuya and Kimimaro are dead.* The way Tayuya died however makes me think that she could have simply been knocked out and be brought back.* Thing is though, if she wasn't killed then, I know Orochimaru would have had her killed later for her failure.
Kimimaro is overly dead.* He couldn't be anymore dead, seeing that there is now a section of field near by Road's End that serves as a his grave... A really perverse grave with all those bones erected, with his body sitting above them.* If Orochimaru wanted to bring him back, he probably would be, but I would think that he would rather use his body for parts and experimenting.* Simple as that...
*I know they are dead. I just wish they weren't because that ending to that arc sucked. I love Tayuya and Kimimaro. Besides, why would Orochimaru go after them. He isn't smart enough and woulld be to preoccupied with Sasuke.
The ending brought about the main conflict in Shippuden.* It is sad, but I enjoyed it as it was tryly a moment that changed a important characters in the show.* A moment that spark serious character development.* Wacth the fillers, Orochimaru kills a few people who fail, and wouldn't like the idea of one of his experiments roaming free for others to find.
Back on topic, I am hoping to find this sort of gameplay in other Naruto games, not simply the handheld ones.* I really enjoy King of Fighters and Capcom vs SNK for that team creation.