yeah. general opinion is that the independent routes (that is everyone except for the rin routes/main route) are kind of disappointing.
i felt like i expected too much from the game until i actually went through the main ones (the maeda scenarios).
there are some hints to the secret of the world occasionally in the other scenarios, but if you really don't like the independent routes you might want to skip through them
(there are some changes here and there in the pre-split common scenario depending if you went through the
yet so i don't recommend doing a CTRL skip for anything in the common scenario.