Seriously, what's with this obsession of bringing Jiraiya back? I don't want to know how many threads there have been made about this already.
Anyway, to be honest, I don't want him to come back. Don't get me wrong, he was a fun and likeable character, but what's the point of killing someone, if you're just going to revive him x amount chapters later? There would be no purpose in killing him in the first place then.
I'd say, he should stay dead. Him coming back wouldn't add much to the story in my opinion