First off , I know we have the move capital option, but what if it isn't an option due to losing the benefits of the Capital where it is. (Move capital should be really only used once your capital is under attack, as an option to restart elsewhere...IMHO)
As most of us know, once a planet/asteroid is 7 jumps away from the capital, its loyalty is at 15% making the planet/asteroid pretty much useless. At least until culture comes to play, and even that doesn't help as much as I'd like...
Perhaps we could have the option of researching a Regional Governor ?
If I ever want to have a game where I have a 1 Star system with 100 planets , I can't imagine being able to control the whole system as there will always be plants more than 7 jumps away from my capital.
Perhaps make it that Regional Governors increase loyalty (their presence on a planet would result in loyalty around 75%) from the point where they are placed and have it spread out 4 jumps in all direction? And make sure they cannot be built until they are at least 7 jumps from a capitol, to keep culture in between the capital planet and the planet with the governor below 100%. This idea along with the current culture towers in the game would make loyalty stronger and make larger single star maps more feasible.
Just an idea... And it would be super easy to add...
Top that off, add a few 4x options like spying on the governor, bribing him to leave, or even switch over to your side, assasination... Lots of options open up.....