The best 4X combat. Huge variety of units and sides (need DLCs though). Unique game in that it just focuses on combat, no diplomacy (it sux in all games anyway) no spies (also sux in other games), and simple but reasonably good (and different for different races) economy. It focuses at one thing - combat, drives it to perfection and the rest of the game design narrow focused to support that.
Being W40K helps with richness of the fluff, if this is important for you.
It is not exactly what you asked, but if it is customization and expand ability you are looking for, did you consider custom build cites like cyberpowerpc.com? You can select from wide variety of components, they build and test it for you, and make sure that everything is compatible and working. You do pay a bit premium for the assembly and tests but it is not that much, and you save your time and have a peace of mind that everything works.
There is no chance for him to go to jail. Such sentencing will be appealed to Supreme Court and you know what will happen next.