For multiplayer, why don't they just include several options for the server owner to pick from when configuring the server? A "one-size-fits-all" for Kerbal multiplayer seems like a bad idea given how different people play it different ways.
EDIT: In my opinion, Kerbal needs to revamp their campaign in some way to make it not feel like just an expanded sandbox. There is still a disconnect between how science is gathered (exploring planets) and how it is spent (on new parts), which makes little sense. Being able to instantly launch rockets after construction makes the Kerbal space program develop unbelievably quickly. Starting with manned launches, like you're basically required to do, is a huge disconnect between how real life space programs developed and KSP. There's no competing space agencies to fight over contracts with, or to compare your progress against. And the endgame is basically just unlocking all the parts, which is done through exploration. The point of exploration in the campaign doesn't have anything to do with learning more about the system, but entirely has to do with progressing further. Which I feel just removes the depth from exploration.
I guess what I'm saying is that the campaign feels like it lacks management depth or a proper goal, both of which a good management game needs. The challenge of campaign mode comes from engineering and flying a space program, with very little coming from managing said space program. Sandbox mode is basically the same, except with that little bit of management gone. Kerbal has the potential to be that nice mix of a management game, construction game, and flying sim, but really only gets 2 out of the 3. And in today's market it seems like most similar games do the exact same. And honestly, I think that bit of management depth (and maybe exploration depth) is what KSP needs the most to truely live up to its full potential.
That being said, the current solar system does feel like 2/3 of a solar system. Those outer planets we've been expecting for years kind of need to be added for the KSP solar system to truely feel complete.
So although what Squad has done in the past couple years has been nice, it's all been little improvements to the game which fail to address the core issues surrounding the game and the major areas where the game feels incomplete.