Since BossConstructor has been released in 2016, I have been working on a total of 3 free bonus DLCs for the game.
Bonus DLC 1, which was added in 04/2017 contained the Disintegrator Beam, the Augmentation Module as well as various quality of life and gameplay improvement: https://steamcommunity.com/games/330100/announcements/detail/236845278926219729
Bonus DLC 2 added the Bussard Ramjet and advanced galaxy customization options in 01/2018: https://steamcommunity.com/games/330100/announcements/detail/1582318407740335807
I am currently looking for ideas for the final Bonus DLC 3. If you have ideas for modules and features you would like to see added, please post them here: https://steamcommunity.com/app/330100/discussions/0/1692669912383486452/