Ability to parse URLs within feed/page would be useful, for example to display images... Including the ability to add prefixes (for example if the feed domain.com/feeds/news.xml simply specifies image.PNG and the host site knows to load domain.com/assets/images/image.png
You can do this using Tasker, and then pass the result to WatchMaker... http://wear360.blogspot.co.uk/2015/02/watchmaker-with-tasker-for-automation.html