Wouldn't it be awesome if Jiraiya gets reanimated and we get to see the three Legendary Sanin's reunited again?
I don't care for what purpose though :p
I mean why would Orochimaru bring Karin (obviously Heal Tsunade), but then...Suigetsu too! hmm!!! Only reason he'd get Suigetsu to come is to retrieve Jiraiyas body from the depths of water only someone like he, who can change into water, could reach due to pressure. But why leave Juugo with Sasuke who is practically doing nothing!
I am a believer