That sounds like a great update for the BMW E60 mod in FS25! Adding a trailer hitch, color configuration, a nice interior, more engine options, and multiplayer features like working passenger seats are all excellent enhancements for players to enjoy. The inclusion of working lights and basegame plates also add to the realism of the mod. Additionally, fixing the refuel issue in V1.0.0.1 shows that you are actively listening to user feedback and continuously improving the mod. These updates will surely enhance the overall gameplay experience for players who choose to use the BMW E60 in FS25. Keep up the good work!