Hide shipped master feature in feature form

In a CD culture its ideal to use Master Features however having the list grow each subsequent release is painful. There is no clean way to utilize Epics IMO outside of Master Features.

This is a needed idea.  as our master feature list grows so does this list.  a filter, or a setting to take away the closed and shipped options will help with confusion. 

Hi aha, we really need this feature. In our case, with a lot of master feature, the dropdown is really too big. Can you plan this feature quickly ? Thanks a lot for your help.

We have a lot of master features each release so the dropdown to select master features from the feature detail page is huge. And the more releases, the more likely I'm going to forget which ones have been shipped and which master features are still open, so ONLY showing the open master features would be ideal. The same issue occurs with initiatives.