Not sure if this has been brought up, but the only good way I see this affecting me is being able to use rewards on BT cards. My point: I have never spent a dime on interest, and hope never to do so. All balances I've carried have been on 0% interest cards, such as my Discover card. Now I wanted to use my Discover when it was giving 5% back on gas, but couldn't because I'd have to pay finance charges, so I opened a BoA card just for the BT rate so I could use my Discover. I would have loved to just charge a couple hundred dollars worth of gas a month and pay that off on top of my monthly contribution to the balance.
Unfortunately, I don't see 0% offers being too easy to obtain in the future At least not for people with average credit like myself. Maybe for you 800+ FICOers, lol.