You're far too suspicious, Quiet Lurker. I put trust in Bethesda to deliver a complete game, with addons which are just that, things that ADD ONTO the game.
As to whether I'll buy them or not, I believe Echon put it simply. It will depend on the price and the contents.
More and more games these days have these sort of things, and Valve went the next step with their carefully disguised system of verification and went to the point of having to launch the games from an online startup screen. Its only going to become more common. That said, Bethesda have never been piracy freaks, I don't think you even had to have the CD in to run Morrowind did you? (Its been a while since I've played it

waiting for Oblivion.)
If there are cracks and such for the upcoming game and/or addons, kindly keep talk of them off the forums. What you do in private messages is your own business, but I'm sure the last thing SC wants is to get into legal trouble over his forums. So why take the risk.