Yeah, something that like what is needed for the Nomadic civ, but not build able.
I'm thinking of a unit that costs more or equal to a settler that comes with a spell which creates an improvement with a large but weak culture radius.
This is designed in mind of creation map script on huge and above. It creates beautiful terrain, with few decent city locations. In the early game its beautiful, but then the AI just R.Ex.'s and swarms you, and its a performance issue for some machines. What if you and the AI could stake up claim to vast useless areas of the map in order to enjoy the huge territory but not micromanage and ruining a playable turn rate?
Just for fun, the improvement should have a chance to spawn animals of different types for capture, another reason to stake off land. Event "A ... emerges from the wilderness near one of out markers".
Which reminds me, KAEL, with all the great ideas out there, could you implement (a few?) trial wilderness mechanics in 0.33? Or maybe Xienwolf or Vehem could whip up a few? You might but I can't assume that you know you want to...