Honestly, it’s probably more user friendly than a lot of the contrivances that have to happen because this isn’t in the game. For example, prisons. Right now, there are two prison policies for prison funding and prison regime, and they affect each other’s properties (or at least, it would make sense if they did). I think it would be more intuitive for new players if those two sliders were on the same screen and you could directly see how they affected each other just from looking at the bars.
BTW, on the topic on modified effects, I’d recommend putting the icon for the node that’s modifying something under the bar for the effect.