The basic gist, I think, is that a balance needs to be had between ideology points gained, and how ideology points are used.
Especially with the Arcean ships each gaining a Culture point (that's 3 early, 2 more not far behind) there aren't enough ways to go deep into a path right now.
My basic ideas are (1- Policies went from +3 to +0, and this is too severe, make it +1 at least, and (2- make planetary events more common, maybe 25%, and see how it goes