Filter Edit Permissions Improvements

Like that we can let others edit filters if we want to do that. I have normally 1 person I want to allow to edit filters I have created. The following would be nice to be able to have:

1)  Set in user profile an always set user for editing, like we have for sharing filters where we can set who can automatically see newly created filters.

2)  Mass edit the permissions for editing.

3)  When filter is copied the editing permissions is also copied. 

For releases I create about 25 to 30 filters each time and right now I don't go and add someone to edit only because it is time consuming to edit permissions on every filter.  Normally I copy from another so the copy from one to the other would be nice but if you know you always want a certain person or group to be able to edit it would be nice to be able to have that as a default in your user settings.

Mass edit would be nice so if you want to put someone on to edit ones you created a while back but they may need to edit you could do that easily.