If u like coilkit thoughts on subcoil...
I hope you mean the father son dynamic. I do not ship coilkit I wanna make it very clear, it would be creepy asf since I write Medkit as having met Coil when he was 17 and he himself was already a grown man.
Father son subcoil would not be able to exist because Subspace is incapable of caring for someone like that, he can barely take care of himself. I think the closest thing we can get is him treating Coil 2.0 the way he treats his biografts. With a bit of endearment even more so than regular biografts, but at the end of the day they're still a means to an end.
Here's some very old coilkit art I made and never posted (at least I think I didnt)















