Featured Content was introduced to get around the fact that Sticky Posts in their current incarnation are a nightmare to work with. I've found featured content does a better job of handling "sticky" content than Sticky posts, as it supports both posts and pages. (You don't really need Jetpack for this; look inside of Twenty Fourteen). That said, sticky posts can be useful for important and timely announcements, but they aren't something I would ever be sad to see taken away or redone in a way that makes sense to how people use them today. They can mess with custom queries, also, which is enough to make me avoid them.