I think I have a solution to one of the main issues that makes ground vehicles and soldiers useless.
The atmosphere of planets should work as a natural shield, preventing bullet, beams, pulses, and missiles from passing through and hitting the surface. This would make ground combat viable without worrying about being destroyed in .3 seconds by an orbital swarm missile strike. Disintegrators would not be stopped, however, so they could still be used to soften up targets beforehand.
Next, to prevent people from just sticking the front nose gun of the their dreadnaught into the atmosphere and blasting away anyway, the atmosphere would deal damage to ships based on mass as they entered. The heavier a ship, the more damage it would take as it entered. A capital ship skimming into the atmosphere would come away with huge chunks ripped out where it impacted. However, smaller ships would be able to enter and leave atmosphere without any issues.
The atmosphere of planets should work as a natural shield, preventing bullet, beams, pulses, and missiles from passing through and hitting the surface. This would make ground combat viable without worrying about being destroyed in .3 seconds by an orbital swarm missile strike. Disintegrators would not be stopped, however, so they could still be used to soften up targets beforehand.
Next, to prevent people from just sticking the front nose gun of the their dreadnaught into the atmosphere and blasting away anyway, the atmosphere would deal damage to ships based on mass as they entered. The heavier a ship, the more damage it would take as it entered. A capital ship skimming into the atmosphere would come away with huge chunks ripped out where it impacted. However, smaller ships would be able to enter and leave atmosphere without any issues.