Add functionality to "release phase" categorization of features

In hardware projects, there are a lot of deliverables leading up to a release. I've been using features for all deliverables, regardless of whether they are "features" in the strictest sense and using feature types to define/sort. Using features rather than "to do's" significantly improves functionality and flexibility. 

However, using features in this way means that the features are all linked to release phases and those links define what features deserve focus now, and which ones don't need another thought for a couple of months. It's possible to assign features to release phases but I can't sort them by release phase in the feature list or feature board. I also can't upload features from CSV with the release phase pre-populated or bulk-edit the release phase link, which means I have to link each feature individually after I upload my release template of tasks that apply to most releases. 

It would also be super helpful if you could rank features before uploading from CSV because currently you loose any priority ranking you've done in excel when you upload.

These updates would make managing my projects much more useful. I imagine this functionality would also help anyone using release phases to define sprints.