I'd argue Naruto is still Naruto. The manga increasingly revolving around Sasuke is pretty valid concern of course, but it hasn't fallen into Bleach's particular rut. A character like Shikamaru can still win without requiring Naruto to come in and save him. Whereas an equivalent character in Bleach like Ishida isn't allowed to win even with a partner aiding him.
And the dual focus of Sasuke and Naruto might become a more interesting dynamic since it's not quite as ridiculously focused on JUST Sasuke now. Inevitably Bleach is about Ichigo in the end and all characters exist to propel him forward.