to create a new shinobi system imo
But how? By being Hokage or something else
He wants to create a system of peace without hatred. TO do this, he believes he has to control the ninja world through power.
Nailed it. Sasuke probably isn't gonna be as bad about it as Madara nor will he be underhanded like Danzo was (cause that would be hypocritical) but by a method that Naruto won't be too fond of and could potentially lead to their final battle: A battle where they put their beliefs on the line.