IE has to be specifically coded for because it doesn't support modern web design fundamentals. NoScript users have to be specifically coded for because of the same reason.
How often do you run into a website with Javascript that breaks your experience? Would it not be better to have a blacklist than a whitelist?
When I run into a website that breaks my experience, it slows down my computer, crashes the browser and takes away the comment I was about to write. No, thanks.
So then we're back to the previous comment: what does IE have anything to do with this? If your browser crashes because of a misbehaving script... I'm not saying you're using IE, but you're surely not using a browser that fits your needs. Chrome simply crashes the tab, and Firefox hangs for a few seconds until it asks if you want to stop the script.
What you're looking for is browser sandboxing, and it exists.
How often do you run into a website with Javascript that breaks your experience? Would it not be better to have a blacklist than a whitelist?