Final Frontier Plus is, as the name suggests, a modmod of Jon Shafer's Final Frontier mod/scenario included with Beyond the Sword. Unlike most of the existing Final Frontier modmods, it is not a total conversion; instead, it is an expansion of Final Frontier itself. The goals of the project are threefold: to significaimprove the speed and reliability of Final Frontier, to make Final Frontier Plus a richer and more immersive experience than the Final Frontier scenario, and finally to improve a modder's experience in modding Final Frontier.
Here are a couple of mod screenshots-- the main menu of Final Frontier (with the little "Final Frontier Plus" in the corner!), the Civilopedia (which is Sevopedia, from the BUG mod), and some wormholes from the Wormholes module. I wrote Wormholes a long time ago and merged it in; God-Emperor merged in BUG more recently (relatively), bringing significant interface improvements.