Sasuke to get perfect Susanoo?
Alright, so if you think Sasuke is on Naruto's level right now Dont' read.
So now Naruto has BM, and will master it pretty soon. this leaves Sasuke lagging behind power wise, and according to the plot no jutsu pattern he is due for a powerup.
Madara says the only power comparable to perfect susanoo is a bijuu. In my eyes, that translates to Sasuke needing perfect susanoo to stand with Naruto.
I'm not quite sure what the requirements are for this Susanoo, but it looks like you might need the rinnegan for it. I feel that we will find out more about the rinnegan and this susanoo in the next few chapters.
Edit: Going to sleep, so i won't respond to replies till tomorrow.