everyone on my server basically skips any and all other form of power and goes straight to reactors. B/c a starter/basic reactopr is so cheap to make. And doesn't require any previous things be built. I just feel like this is an oversight and way out of balance. They feel like they need a new higher costing casing, that requires you had done some energizing at least. And maybe blocks of uranium in the corners.

how the reactor auto builds itself

Then you should change the recipe with KubeJS.