I agree that stepping away from support is a community thing, but I truly believe that the role itself is heavily watered down, no matter how many changes the supports kits go through, the truth is that, for the most part, the role is pretty passive and this is coming from someone who understands the value of an support who focuses on strategies instead of being a healing/peeling bot.
I do believe there are some things that could be added to the game in order to make the support role more interesting as well as solidifying enchanters' goals but I also think that Riot is against doing big scale changes to any role... for the record, Bard is probably what a support should look like, someone with incentives out of lane who can roam and support several lanes at the same time, sadly though, increasing the difficulty of the role itself has the opposite effect.
My suggestion would be to implement some sort of shrines throughout the map (eg. there could be one on the tree that serves no purpose inside the base, some others in some bushes and turrets could also have their own shrine) that needs to be captured by the support only, maybe through an item with specific stats (kind of what happened with chalice and how everyone steps away from this item) that interacts with exhaust like smite does with the jungler item...
this is but one idea, but basically getting support out of bot lane and making it have a global impact should be step 1 IMHO.