While I like the idea, it will only make supplying a base more annoying.
It is already very annoying, and you already have to check on a lot of values, and mistakes cost you billions and months of effort.
With more options implemented to harm bases, I just fear that caring for them will become even more tedious...
And... let's be honest and look at what it would mean in reality:
Wednesday, 4:30 am: master-race shuttling marines in. It's already crappy with these early morning weekday attacks, and opening cheap ways of hurting other people's constructive efforts might not be a good call.
If marines cost like a lot, so that the cost is sigificant (like: in the hundreds of millions for a successful attack against a normal base), I could be okay with it. Reasoning: It replaces the need for a Battleship, for a CAU armor, etc etc. It can't be anywhere like cheap. But that would again make it very costly for base owners and I somehow do not feel like putting more burdens on those who create something that others just prey upon to destroy it once they see a chance.
There are some side-effects, too: the need for turrets would rise a lot. So more bases would have even more turrets. Do we want that?
Moreover, this would especially put pressure on the low tier bases, whereas high tier will almost be immune to it. Try and sit still in a ship in one of the senior base perimeters while hostile. Battleship Cerbs will show your marines space.
And rep will be a pain, too. Because these freighters in the 2.am raid ofc would be FL-IDed or would have an ID that is neutral to the base, to be able to unload without problems. So the code would have to include that unloading marines => attack => triggers base defense.
Furthermore, there is no reason a Military base should defend better. I bet Liberty Rouges are fierce defenders and Mollys would at least be as badass as a BowEx security squadron and all of them would be comparable to a bored military security crew on a base.
Jack, torn between "interesting playing scenes possible" and "reality: 3:30 am night raid with 12 player on".
