[AgentZero]

Exactly. If facility space was calculated in kT instead of facility slots, it would make it very easy to have differently sized facilities. So a medium planet that currently has 15 slots would have 1500kT facility space, for example. If each 'normal' facility is 100kT, it's the same thing as in SE4, except we can have facilities that are both bigger and smaller.
I'd like to see Planetary Gun facilities. More or less the same idea as Weapons Platforms, but they're facilities and make up for taking up precious facility space by being a lot more powerful than anything you could put on a weapons platform.