At the completion of a Moodle lesson we currently have the ability to link to another activity. If I want to send a user to a specific place in a resource, like a page in a book, it's a convoluted process. (Create a URL resource, set it to open, orphan it so it doesn't confuse student, then tell the lesson to link to this URL resource). It would be very handy to have a 'link to URL' option in the Lesson tool that would instead take the user to a specified URL.
As far as implementing this goes, we could have the option for a drop down, URL or Activity. If URL is selected, two items, one for the link text, the other for the URL itself.