I’d like to propose an idea about planetary escalation.
Two variants:
An RTS (real-time strategy) session against NPCs. Gather resources, build a base and army, destroy the enemies.
A Tower Defense session. Defend your planetary base.
If victorious, for example, a bonus to the planet’s production could be granted. If defeated, a production debuff.
The more efficient the system built, the higher the chance of triggering an escalation, and/or the less downtime over a certain period, the higher the chance of getting an escalation.
You treat my suggestion as a major change. But the point is different: you do the things you enjoy more — mining ore, building ships, fighting, scanning, hauling cargo, or whatever — and at some point, you get a bit tired of your usual activities and go into planetary escalation for a short change of pace.
Though it might indeed be a crazy idea). There was something similar in Space Rangers.