I was just thinking; with the special planets in DA we'll probably see much more intermixed empires as races who can colonise special planets will be able to waltz in and claim worlds in your systems which you're not yet able to use. So:
Will there be any way to warn off other races from taking planets inside your borders? Or maybe some method of claiming a planet before you can colonise it?
Will the AI be a bit smarter about where it colonises? Right now the AI almost always takes Mars or whatever crappy PQ4 world I have in my home system which gets flipped in no time at all and basically gives me a free colony and can sometimes start wars due to close borders/alarming influence. I don't think I've ever seen any of the AIs build the noflipping improvements on any good worlds they take inside my borders either, although they do sometimes try to shore them up with influence starbases.
With the new diplo options is there any chance of a no flipping pact so you won't take flip each others worlds? It always annoys me when I start crippling friendly races by fliping his worlds - often I'm forced to build them some influence bases.