Man, one of these days it'd be super interesting to declare war on Seeker. I'd start off by running air attacks, to get rid of that air force of his he has. Then as soon as I had domination there and cut the tanks he can use, I'd turn around and take domination of his land forces, too. The crossarmed domination lock would give me a fairly straight forward path to victory. He'd probably bring his navy in and blockade me (I know I'm lazy with my ships), but I have good stockpiles and I don't really need to buy anything. It'd be over in a couple of days.
I'm just spitballing ideas of course, though, and formulate similar ideas about attacking all sorts of people. Wouldn't want to give anyone the wrong impression.