Hellakazoo has posted some additional screenshots of his Galactic Civilizations 3 WC mod that highlight some of his latest additions, such as the Tarsus and Clarkson jammer. There's also a neat screenshot of one of the game's menus that feature the character portraits. Some of the recent CIC Forums discussion has been about what to add next. The larger Confed carriers are likely, and then there may be some interest in adding ships from other factions such as the Border Worlds. You can hit the Comment link below to share what you'd like to see or find more information on the mod at the Steam Workshop.
I still need the Confederation to finish out WC2 (WC1 is done) but that ship will likely take up as much if not more time than the Bengal did (few weeks of fiddling) so I feel like it's a toss up between Vesuvius and Concordia ATM.
I've also begun putting together factions for Union of Border worlds and Free Republic of the Landreich. Since they share some ships with Confed the ship sets are actually more than halfway there for both already.