Ok, so I'm making my custom chapter of SM (how unique I know).

I was thinking, how out there would it be for the Astartes aspirants to have their sperm extracted before the procedure to becoming Astartes?

The reason being that their homeworld has a strange atmosphere and spikes of radiation that leave the human inhabitants less likely to have children.

Thus being that the chapter collects reproductive cells from aspirants and uses them for the civilians who can't have children. Therefore making more babies that are likely to become space marines?

I like the idea that there is successive generations and bloodlines in my chapter

This chapter has a high ideology of brotherhood so idk.

Is this too ridiculous?