Need to join a fleet and wait for Season 7 for Mk XI and Mk XII ground kits. The recruitment branch of Embassy Fleet Holding has Romulan Bridge Officers and Ground Kit variants. So they might not be improved versions of the regular ground kits, but new ones.
me personally am looking forward to kit upgrades, but i dont think they are a fleet thing in season 7, i think they are part of the reputations system, then again i could be wrong XD but yeah new kits ahoy XD
Its a fleet thing. I have checked the various tiers for the Embassy Holding and Reputation system. The devs could add kits to the reputation system. However, right now on tribble, if you want a Mk XII kit, then you need a fleet and wait. It takes 34,000 Embassy Recruit XP to get the Recruit Tier 3 upgrade which gives the Mk XII kit and purple Romulan Bridge Officers.