One of the biggest interface issue is the new reference dialog. The use is presented with a window and no real guidance on what to do.
Some brief instructions guiding the user to choose an appropriate citation template would be good. This obviously needs to be customisable on a wiki basis. For en.wikipedia you could have something like
"To add a reference please choose a citation template like {{cite web}}, {{cite journal}}, {{cite book}} or {{cite news}}. Click the jigsaw icon to insert one of these templates."
The message could be specified by a page in the MediaWiki: namespace.
Version: unspecified
Severity: enhancement