+1 for different user accounts.
I realize most of this is a no brainer and you must have thought of this but my 2 cents -
Make it like the way PowerCMS works.
Changes that would sell me -
I would like to use this but giving the "non super admin" the ability to change the design would break the page layout that I "embed" the gallery into.
I would also remove the serial number area and Admin password change as well as the add new gallery.
Pretty much remove the settings page outside of the watermark area.
So those things or rather lack of those things make it a deal breaker for me. The single domain license I can deal with...I guess. But the ability for the user to break a layout makes this not work at all for our needs.
And that is my wish for the week. :) See you next week....
Don't you know my parents hated me at Christmas (always wishing for better) hehe. :)