I'm sorry to say, good leadership KD don't have too much of a hard time filling out KDs. Players respond to the right type of leadership and hence there is less player cycling thus no need to go recruit constantly. If your KD is rotating players like crazy, then you should look to fix your own KD leadership issues. This isn't to say your Monarch is doing badly, but maybe he/she isn't getting enough support or what not. Leadership isn't just the monarch, there are a lot of other people that need to competently step up as well.
I'm saying SKD's will STILL be out of range as well as Ghetto's. You'll still end up hitting the same people your hitting now except with possibly even numbers, but then your NW/prov will also be equal assuming you look for roughly equal NW KDs. The only way that you would find more KDs to hit is if the people who were kicked out of their KDs were willing to go to lesser leadership KDs to fill them up or to find new leadership and form new KDs. But if they left their previous KDs because they were unhappy with the play level or leadership, what are the chances they would stick around if they are now kicked out? and all the other KDs that suit their style are already full since they would also have to kick people to make 20.
KDs rotate people because their players are unhappy with some aspect of the KD, if the leadership was strong enough they would not have such a hard time finding people since their would be less player rotation.
That may be true, but I still doubt they wouldn't OOP with the better land whoring strat than pure warring KDs, thus outgrowing everybody very fast anyways. This won't change just because you now have equal KD sizes. SKDs still grew out of size fairly fast even during the prime days of Utopia when there were a ton of 25 player KDs.
I apologize that I worded this badly, I meant if you wanted DIFFERENT targets, you should grow bigger or become smaller. A lot of people here are arguing that the game is boring because they've already fought all the people around their size every age over and over.