Thanks for the update Jon. 

On Mon, Jun 30, 2014 at 2:41 PM, Jon Robson <jrobson@wikimedia.org> wrote:
There are various components that  in Flow that should be polished up
and pushed into MediaWiki UI. We should polish these up as much as
possible, thinking about how they render in mobile, whether they are
important and get them upstreamed to core. Flow also ships its own
version of MediaWiki UI buttons (flow-ui-button). We will have to
standardise and improve MediaWiki UI where necessary before even
thinking of shipping these styles to mobile. MediaWiki UI is already
loaded on mobile so this would be an easy win.

I see Shahyar already has a patch to mediawiki.ui which is a step in this direction. It's at https://gerrit.wikimedia.org/r/#/c/123804/

As I commented on that patch, we need to see some example implementations to understand how these new button styles are intended to work (in general, not just in Flow). I think this is a task for the UX team to tackle, and probably involves updating the mediawiki.ui style guide for desktop and mobile. 

--
Steven Walling,
Product Manager