Where you literally build space ships, and able to load them with ground troops.
speeding up the pace of battle is important so have it things blown up, are just that, blown up. meaning much more quick builds, which if you lose them your not out much, and can rejoin the fight quickly.
Alliance bases would replace the typical everyone has a base mentality. everyone should be able to have one, but allows in different play styles. also have commerce centers, doing things like selling ships, and troops. so what you could do is buy some warehouse space, have a hangar, and might not need anything else, can buy ships off the mogul type players.
add in non combat auxiliary ships like freighters, cargo ships, mining ships, troop transports, passenger ships. where a person can make money off transporting things between 2 areas.
Ship and soldier customization would be the main points of the game. where you get equipment and can upgrade it to no end. same with soldiers for example give them better and better body armor, better guns. toss in some mech warriors, some tanks.
in the 3 games currently, each resources can be at your base, each base shouldn't have that ability, except for maybe a planet.
If you have an alliance, you would want 3-4 bases close together, shipping goods to each other, maybe a space station, with 1-2 being heavily guarded, and the others more expendable, and more for resource extraction.
for example you make an ore mine on an asteroid, your alliance may put 50 mining rigs (3-6 per player on it) and only put a dozen ground troops guarding it, with only 1-2 turrets in the space above guarding the base. only need 1 player to drop a command center/outpost, have a ton of warehouse space, and can ship it all out.
On the other hand your research center (should only need 1 that does all tasks, can do a few at once, which saves map space) if half your alliance has research outposts there, and supply high value goods, that planet should have a very tough defense.
the space based defenses should be uncapped, since if they die they are gone. (lvl 60 defense platforms with lvl 60 guns for example, with 5 shields, and 20 armors) each player should only be allowed to build one platforms and donate 1 ship to defenses. focus on quality not quantity.
coining things like defenses would be extremely important. you can lose everything in this game, except stored research. in that case you appear over the starting planet in a scout ship.
coiners and non coiners would team up, and make it like a tribe/clan battle where the head coiner is probably the leader, the economy person sets up the buildings, the fighters go out and raid and pillage others. the people taking it easy go do some long range trading. the crazy people go attack fortresses and instantly die. is something for everyone, and can play the game as you currently do, or play as a group. can have ground warfare specialists, can have armored ground warfare specialists, can have battleship, fast ship all kinds of specialists, so that a player doesn't need to have a rounded defense or research, it can be very specific, and focus on an aspect of the game they like or is needed in the group they play with.
take battle pirates you have people with all base hitters, others like subs, others fast ships, others tactical mod ships, you now have carriers, and people playing with ships for certain roles. hats good about this is many people are horrible at managing an economy, or warfare, or defenses and would not want to do 1 of them tasks, using this system they are not required to mess with buildings and other things. for example you can research, or can find blueprints, and if good at killing things, can pay for the way you play by hunting enemies, even gain the blueprints to make your ships better.
This does break from the original kixeye game formula, but adds in the best of there 3 more real war games into one game, it doesn't remove coining at all, infact probably helps it out. adds alliances as a bigger part to the game.
This allows all players to be on all day, with something to do, when a junk fleet can be launched to mine, with the fleet being built in 5-10 minutes, you lose the hole fleet and your not out much, you drag resources back, 3-4 trips should be able to replace the junk fleet. and allows the high coin players to benefit from people working for/with them. they buy tons of ships off them, and all sorts of equipment. which most of they can instantly build, and charge them a little over the production cost. them ships come back beat up, and they make money repairing them. they get bigger eventually and start filling roles for you.