Add the ability to create sub-galleries so reviewers can have access to more than one gallery within a project, but not the entire account. To be able to compare photos sets, and shoots from different days on the same project, or keep different shoots organized within a category. Tags could also be used to collect common groupings (genre, subject, matter, etc)

I can't sort alphabetically in the 'designer' mode gallery, it defaults to order uploaded. Need to see the settings from 'advanced' mode to carry over to the designer mode, or have separate designer controls when sharing for clients that will not have advanced access.

Being able to share a folder containing multiple galleries.

Show a list of reviewers who have identified and left feedback.

This plugin will allow to upload directly from Lightroom and sync feedback automatically.

Invite multiple teammates to manage galleries together

Possibility to connect your domain or sub-domain with Picflow.

I have switched off downloads on my gallery however if you hold down a photo on an iPhone it gives you the option to save the photo.

Possibility to sell prints or digitals from a client gallery.