There might be some very interesting gameplay on worlds with virtually no atmosphere. Specifically, the Shrike's rocket motor will continue to provide a force and the projectile will never reach a terminal velocity (assuming this is modeled correctly in the game).
Out of curiosity I tried to estimate the impact velocity we could see from this type of rocket, assuming it was generally similar to, say, a TOW. With similar weight, exhaust velocity, etc a Shrike rocket engaging an enemy 1km distant could probably reach an impact velocity in excess of mach 7 (2500 m/s). Compare this to the muzzle (not impact) velocity of our best APFSDS kinetic energy anti-armor rounds, which is around 1800 m/s.
The rocket wouldn't mechanically be designed to deliver the same type of pressure as a depleted uranium APFSDS or something, but it would close with the target extremely quickly, have enough KE to punch through many AFVs, and deliver high explosives on top of this.
The different atmospheres should definitely add a new and interesting element to armored combat.