Saved filters (or at least bookmarkable filters)

The filter feature is awesome, including the list of "Other filters" that make it easy to get to what I'm looking for. Unfortunately, there doesn't appear to be a way to save a filter or to even bookmark the currently selected filters. Being able to save a filter would make it much easier to implement workflows, like using tags to indicate and quickly find which stories need designs, which stories are ready for sprint planning, etc. 

A couple additional thoughts around filters: 

• Click on a tag within a card and have that apply a tag filter without the need to open the filter dialog. 
• When in filter mode, click ESC (or a filter banner) to exit out of filter mode without having to re-open the filter dialog and scroll to and click the "Clear Filters" button.