Some article may have paywalls i.e. article only accessible if you are subscribed. It would be nice to detect that and the front-end may show there is a paywall at the start and at the end of the article.
Yes I agree, I think I am doing something similar in the heise.py file already where I just say at the end "You need to have Heise+ to read the rest of this article" but having something official would be way better