Add the ability to customize Master Feature cards on the Master Features Road Map

The Master Features Road Map does a great job of showing what master features we are working on in each release and the why. The why being the goals and initiatives they support. Those releases are organized by external due dates and show nicely. In our road map meetings other questions come up like who is working on that project and when is the internal due date. 

It would be ideal to customize the master features cards on the master features road map to add more information like internal due dates and assigned to. Basically most of the same settings on the master features board itself.