1 point: Yes, it's unbalanced because I won't make something revolutionarry. Anyways, you have reason at this point. 2 point: The battery bank Jr contains 250, because it's the perfect half size of the normal battery bank! 3 point: The medium and big engines are alternative, you can also delete them if you want use ION + Hybrid engines, which are more powerful. I made the thurst fair comparing to the jr engine! 4 point: The manufacturer is to indentify (for me) who made it. Of course, it's only config editing and it's not by me, which I mension in the bottom of first page. It was a simple waypoint, so you can know to which mod this part is it.