One of the little feature of reader mode I love is, if you time it correctly (before loading all javascript of the page) you can skip a lot of prompts ( subscribe to read / monthly limit reached and so on )
It's already been done. Wired, for instance, only shows you the first paragraph of a story until you've made an account and logged in, even in reader mode.
I stopped using those sites, instead. I figure that if they're so far up in themselves that they want to employ such user-hostile design, I'm probably not missing much if I just move on and read something else.
