Customise related key for related tracks and suggested tracks

The related key 1, 2, 3 options are great but actually I often find the most interesting mixes are 4 or 7 steps away. 

Whlst the full screen related tracks and suggestions window is also a great addition of rekordbox 7, I have three more enhancement requests...

1. Add the ability to select multiple step options for which keys you want to display in the related / suggested tracks window options. For example... key > current key > steps: 1, 2, 3, 4, 7 (select multple) > up and/or down in key

2. Add the ability to select multiple keys in the collection / playlist filter menu. Currently you can only select one key value. Which seems mad.

3. Add a steps slider / select boxes for 1,2,3,4,7 steps from current in the filter menu

This really seems like basic features that would be insanely powerful for all users.

Thanks