If Wiz has his way, he'd get shot of ground combat altogether, as apparently once you have a dozen tiny ships in orbit, planets should just surrender as there is simply no way for a planet to protect itself against little spaceships.... (and they are little - even a 5km long battleship is absolutely tiny compared to even the smallest world and I don't buy the reasoning by some that ground combat would be irrelevant in some space war)
Thankfully, he acknowledges this would be unpopular, but as a result we probably won't see any major changes to it for the better either.
Personally, I would like planets to be able to build better defences (guns, fortress etc) and for combat to be a bit better than pound planet unopposed then land armies. Tbh, the way they dealt with Ground combat in Distant Worlds was perfect and it baffles me why they don't adopt it for Stellaris, it wouldn't even be that big of a change tbh. What we have now is lame.
Distant Worlds really did get ground Combat near-perfect.
I think Stellaris could get it better though:
The inclusion of modern day divisions like
Armored, Mechanized, Motorized, Marine, Airborne, and Garrison would be a good start. Each Division has a specific purpose with different attributes.
Among these Attributes are:
Attack (damage dealt)
Defense (Resistance to Damage dealt)
Health (self-explanatory)
Size (How many many troops and equipment are included/cost... this limits how many can fit onto a planet.),
mobility (Time it takes to pack up and move unit into ships)
Armored: These are heavy hitters and expensive assault formations. Can be used in near any capacity but are limited by cost, size, and mobility.
Attack power: 200
Defense power: 200
Health: 200
Size/Cost: 4 planet tiles/expensive maintenance cost
Mobility: 6 months to deploy in space
Mechanized: These are typical all around formations
.
Attack power:100
Defense power: 100
Health: 100
Size/Cost: 2 planet tiles/normal maintenance cost
Mobility: 3 months to deploy in space
Motorized: The cheap option, ideal maintaining a minimal security presence and/or quick assaults.
Attack power: 50
Defense power: 50
Health: 100
Size/Cost: 1 planet tiles/cheap maintenance cost
Mobility: 1 month to deploy in space
Marine: One of the two pure assault formations, ideal for long drawn out invasions
Attack power:100
Defense power: 100
Health: 200
Size/Cost: 2 planet tiles/expensive maintenance cost
Mobility: Instant
Airborne: One of the two pure assault formations, ideal for quick capture operations with backup en route
Attack power: 200
Defense power: 50
Health: 50
Size/Cost: 1 planet tiles/expensive maintenance cost
Mobility: Instant
Garrison:
Attack power:100
Defense power: 200
Health: 200
Size/Cost: 2 planet tiles/ Normal maintenance cost
Mobility: immobile