Playing a huge galaxy with lots of planets/colonies, when you reach that point in game where lots of colonies are fully developped, you could have won the game already, but you're still aiming for a conquest victory... Well, that is boring to play once there.
Now, see, I do like some of the changes implemented since Crusade, I appreciate the effort, but some of these things need some more improvement, I believe.
The Commonwealth... well, I don't really like the system. I understand why it's there, the devs want us to manage a large empire, kinda the way the British did, give autonomy to some chunk of territory and still control their foreign policy.
But in a strategy game... that does not really work, imho. I really, really want to be in control of my colonies. And maybe I want to create a commonwealth early in the game, but later reabsorb these planets under my direct rule and grant some autonomy to other planets.
I do like large empires, able to build what I want, where I want. Governors... well, I know how the AI builds its planets and that's not for me.
At some point in the game, my colonies are nearly all fully developped and I have these temporary projects that I can renew indefinately, by clicking on the project multiple times. Multiple, multiple times. This is tedious.
The previous system had its flaws and this system is a nice improvement, but I'd really like to have best of both worlds. While mid/early game, when I have built everything I can under the tech I'm at, it's nice to have a "reminder" that a planet needs attention. So I can see this planet really needs me to direct it.
But late game, once I've got all the techs, used all the land, it's not fun at all. I click a few dozen times on the project I want, but I always need to go back. Or I would need to click hundreds of times...
Just like the starbases, it needs a little something more.
So what if there was some kind of "check box" when I could click "repeat project" ? So that way, if I want a planet to focus on economy once everything is developped, I click the button/box, and my selected project will be repeated indefinately.
Or maybe an option in the governor screen "do not destroy any improvement" ? So that way, if I selected a "research" governor, he would built the research projects and not destroy all my factories to build research labs.
If it can be reasonably be done, I think it's an improvement over the current system.