There is a place that exists past the rocky reaches of the Blade's Edge Mountains, across the sacred plateaus of Ogri'la, and beyond the void, untouched by the spoiling hands of the Burning Legion. That place is configuration heaven. Here, addons like kgPanels and Stuf unit frames dance together in unlimited configuration. This is a place of endless ordered chaos, more options than humanity deserves held together by a thin thread of creativity. Gnosis dwells in configuration heaven.
Quartz did the cast bar right -- there was little else that I really needed from a cast bar addon that Quartz wasn't the most capable at doing. Complicating a user interface element while also providing legitimate information in new and user-friendly ways is a hard balance to strike. Gnosis complicates things plenty, but it does so in a very smart fashion. There is a lot to learn here, but the effort is worth it.