After a week of heavy development, Interface3 has effectively reached maximum potential - there's virtually nothing left to improve upon.  Perhaps the only thing remaining is a preferences window.

I3 now has a post-processing bank and full post-processing capabilities, as well as a new tile that controls the composition name.  Finally, I3 gained the ability to set default states for plugins by directly manipulating the plugin configuration files.  This means that users waste less time configuring plugins that they use frequently with the same state - instead, they can just set that state as the default, and I3 will automatically load the configuration when a new instance of the plugin is loaded into a tile.  This simple yet elegant feature has already saved me a great deal of time.

A final screenshot of I3: