The fact that you have to have a frog on your shoulder really kills all the coolness of Sage mode.
I wonder though, if Naruto can just use his clones to fight while one body remains hidden and motionless gathering Nature chakra.
Oh, totally forgot about the detection bubble around Konoha. That was a pretty cool piece of setting they introduced there.
They also all have the piercings, so I'm guessing his control is not limited to 6.
What would have been REALLY badass is if the body Jirayia killed had been replaced with Jiraiyas.