JoeF: I think that with CK2, Paradox has found realy nice strategy with DLC. Features in free patches and EXTRA content for those, who pays extra. I think, that this is quite honest way of doing that.
So, I do stlll think that if I buy Impire (and I am realy looking to it, but I have quite specific taste and I am realy scrooge too), I should get skirmish AI where skirmish is possible and I should get the promised multiplayer (and cooperative multiplayer). I can be content if it wouldn't be right after release and thus will be in better quality, as you said, Impire is rather cheap (though from what I have read, Cyanide has little problem with finish up interesting concept they tried and looked realy promising, still Chaos league was realy nice game with great humor).
But if Paradox would extend their honest policy to this game as well, happy players would gladly throw more moneys for extra features they don't realy need. And if would be the game of my taste (as Dungeons wasn't) and the strategic map looked like realy good concept (eg. going of dungeons to loot and pillage, destroy kingdoms and be the Horde, Scourge of living, something I wanted to do in DK), I would me likely to throw extra moneys too (and more if I would think I got something extra and something free or as gift)
Argh, I again forgot why I was writting this.
Short: Skirmish should be in game as part of full game, not as DLC. Can be free DLC-patche content as in CK2 (realy good concept there). New features->happy players->more likely to buy DLC (as I usually bought game when Paradox Newsettler send me game for free).
(It would be still interesting if the honest policy bring more money than the dishonest one, selling numbers etc. as it is too good to be true)