This thread has an interesting conversation regarding Terraforming Installations and their utility compared to the ship-based component. Long story short, Terraforming Installations are
wretched as they're a logistical nightmare (5 cargo holds per installation + infrastructure required for the population to run them) as opposed to orbital stations, which can be tugged into place much quicker and easier. The fact they cost more is just insult to injury.
I'd like to propose that the cost of Terraforming Installations be
slashed, anywhere from one-half to one-
quarter their current value. This would create an actual trade-off for the logistical headache they pose for use anywhere outside of Sol. It'd also be a lore-friendly way to explain how it takes a million people on the planet to do what a crew of hundreds can accomplish in orbit - i.e. automation. And as Jurassic Park taught us, that kind of automation is neither easy, nor cheap.
Would it be possible for Artillery, when being subjected to Counter-Battery Fire, would use the higher of their two "evasion" stats? So the higher of Hit Mod or Fortification. This I think would make representing a vehicle's ability to "shoot and scoot" over a Static pieces in-ability better represented w/ minimal effort. Since it happens in the Bombardment phase, which I assume is distinct from the regular Attack / Defend phase, this might be simple~ish to execute.
I'll second this. I've been building Self-Propelled Guns for my invasion units specifically because mobility is their only defense when they're the ones attacking (i.e. dropping onto the planet with no prep time to dig in.) If they don't get that benefit specifically in the bombardment phase, that's rather unintuitive.