I'm devastated by the decision to remove the planet-local wheel. It basically inflates the problem you had managing planets to your entire galaxy:
If you focus your global spending towards one of the three resources (prod, econ, research) then all the improvements, buildings, etc. built for the other two are essentially worthless, or at the very least very very inefficient.
With proper planet-local governance you were able to mitigate this: dont build econ buildings on research planets (and vice versa), don't build research/econ on production planets etc.
But now, with the wheel gone, what are you left with?