I think that it could be more social Discourse, adding more social networks, like reddit, meneame, wk, but the problem is that there are a lot of social networks… so what choose?
The solutión could be add on admin pannel a tab to customize social networks, with 3 fields:
Icon:
Name:
API url to share on this social network:
It’s more flexible and the admin user can be customize his discourse forum with social network that he wants.
It would be more flexible add new social networks. For example, to add social network tumblr to share links (in case that this network allow send links)