Account Wide Configuration
All UI configuration is saved in PlayerPrefs, so will remain constant across characters on the same computer account.
Adjust transparency of different UI element types individually, and even child types where appropriate.
All non system (ie, non critical) UI elements can be dragged and placed anywhere on the screen. Popup windows are always draggable, and static UI elements can be enabled for dragging with a configuration option.
Static UI Elements can be individually enabled or disabled for a UI as minimal or information rich as you desire.