I feel like that would kill half the point of using the mod as I could just...launch a rocket from the planet if I'm spending a bunch of resources. Throwing something off the side of one platform and catching it with another really doesn't cost much if you think about it.
Though one could argue you could do a "barrel" like concept where the chest needs to use barrels with its launches, and they're reclaimable on the other end, so that there is some logistical planning that needs to be done around containers rather than yeeting 100 copper plates into space and having them all stick together by themselves.
That said, base game, it doesn't cost materials when sending materials back planetside, so if they don't even need to contend with the atmosphere when launching to another platform, should it conceptually cost materials in any way? I already drop a hundred steel per minute onto my planet from orbit "for free" why would it cost material to instead just toss it to another platform?