Membership Plugin Suggestion: Display user accounts with no level or subscription assigned

Hi,

The membership plugin is working well for us, however we have a suggestion that would make things much easier.

We are importing users into WordPress (as subscribers), and then we need to go to Dashboard -> Membership -> Edit Members so that we can add a "level" or "subscription" to their user account.

Currently that screen allows you to filter by each subscription or level, however it doesn't let you just show the user accounts that have no level or subscription assigned.

Would it be possible to add a --None-- option to each filter dropdown box, so we can display all users accounts that don't yet have a level assigned to them?

From there we can then use the bulk actions to add a level to those new accounts.

Thank you.