There appears to be some room for micromanagement. Moving around the tool I can get it to increase some value by one while others are not reduced.

I for one like the new governor's wheel, it lets me see the tradeoffs I am making visually when I swing into high gear for research on a planet.

I tend to adjust things reasonably often in the mid game where most of the dicey battles occur for me, I find the early game and late game pretty much take care of themselves, you either have too few resources for less than a 1% change to be meaningful, or so many resources, 1% just does not matter much one way or the other.

I do like to simplify controls where I can and I find charts like the new governor's settings wheel help me put my decisions into perspective.

I do see the rounding errors as well, but that is a display issue I am sure, they likely round on screen display up at .5 or greater, so if you hit a spot where you have 2 items at .5 you end up 1% over, and with three at .4 or less the same occurs in the other direction giving you 1% less.

You are not forced to do that of course, but if you want to make most of course you take that extra research/production/wealth from the system.

Perhaps they add the "grain" in the pie so that you can only move it in increments of +-1. Need to experiment more to see how numbers are affected in the actual outcome. This far only did quick check to see how it worked out.