Put me down as another wait and see. I have a very long time til my account lapses (year based subscription). Years of MMOs have made me comfortable with the idea of a monthly fee, and I just took the biggest deal.
That being said, I am contemplating the possibility of non-renewal, although only based on the trend and not the current state. If things continue to decay, I may cancel, but if things can at least maintain, it will still remain a net positive for me. I absolutely understand the desire to cut down on piracy, and a web-app can potentially be a blessing, although it is often a curse. On launch day it felt like a curse based on the number of crashes I had to deal with.
I understand it broke the ToS to let my players download the CB to their own computers, and at least one of my players felt it was only fair that he get a subscription as well, so 2 out of 7 is better than 1 out of 7. I also have purchased more than 70% of 4e books, taking the time to drive an hour to buy it from my FLGS. I know that overall I am a net gain to wotc, and I know my players will never invest as much as I do, and no wotc policy is likely to change that. I can tell you, none of the players who don't currently subscribe will: most likely they will just log in as me, and if concurrent logins don't work they'll print to PDF or just print out the character on their own time. However, none of us pirated or uploaded any content to pirating sites, so I can understand wanting to quash people who are totally removed from the DDI revenue stream, but nothing they've done the past 2 months has earned them any new subscriptions from us, nor will it.