Would also be ideal to be able to select users and then change multiple types of attributes (ex: skills AND queues) without having to re-select the list of users each time. One the filtered list is selected, it should remain until it is intentionally cleared.
I get the 'perspective' of consistent branding - BUT - if you are an ISV with a Managed Solution you want to retain your own identity; and currently if you add a Modern XML Theme to your solution the client has all their Solutions in the Environment reflecting the ISV Branding.