Is this doable

One of the things I liked about SE IV was the differant sizes of ships and units. Large, normal, small, medium and when it cam to units there was also an infantry type of troop. I want to reincorperate that into SE V. They would come with their ship modual, an infantry transport one (like the ones for colonies), that you needed to carry infantry aboard. Infantry wouldn't be as good or strong as the machine troops but would cost alot less to make and maintain AND in order to capture a ship the capturing ship would need some infantry on board. They would also have various techs that would increase their ability.. to simulate improved weapons and armor and even tactics.

Anyone know if all of this would be possible? And if you got ideas and such that could go with this please do tell, I'd love to get some feedback and ideas!

Kyle