Kyuubi Mode, you know with the whole glowy golden chakra which makes him resemble the Sage of 6 Paths somewhat.
I just wanted to make sure he didn't forget about it but I guess he didn't know about to begin with so yeah. Rasenshuriken will have some backlashes on him without Sage/Kyuubi mode because he wouldn't be able to throw it.
He was just using the whole Lee without legs thing as an example, it wasn't literal. However Naruto isn't useless without SM but it is his second most powerful transformation. However Naruto took Neji down before (three years ago) and I think he could do it again now (even though it was three years ago, Naruto became a mini Jiraiya in that time so he could still mess with Neji even without SM or KM IMO).
i now wat kyuubi mode is
i thought it might mean something else