I don't think the numbers are actual numbers for mines &troops... I would think of each as a squadron/group. When you think about it... what are the chances that a ship will hit a single 10 ton object in a sector? realise that a sector is actually 3D as well, or should be. Ditto with troops... I don't think an few troops would be able to capture a planet, even a small one that has a few million ppl. As for fighters, look at the cost of our current fighters and how long it takes to build them. I think the settings are fine... If anything, it should take long to build the starships, and not the units. Just my opinion.
