There's a list of the ShEx expressions created thus far: 

Is there any hope that wikibase could link direct to specific shex, so if there is a shex for an item being used as a class, or if a wikibase item is an instanceOf one of those classes, wikibase could link straight to the shex?

Similarly, if there's an item that is being used as a class, could there be an automatic link that shows instances of that class? This isn't too hard to quick copy some item numbers and write a query to do, but it'd be a nicer experience to just click on a link right on the page for a class to see examples of that class. 

Ultimately it'd be super-cool if you could create a new item as an instanceOf a class direct from a class page like the Cradle tool ( https://tools.wmflabs.org/wikidata-todo/cradle/#/ ) for anything.

Thanks for everything that you've been working on with wikibase/wikidata!

-Erik