Adding a Bunker with its own small turret, alá Raynor's bunkers in Co-Op (Anyone who chooses Shrike Turret in WOL is wrong imo, 150 hp is better). Maybe even able to craft 'Units' to sit inside your bunker and give it different attacks. This could be very cool. I really hope to build a proper Bunker wall with this mod one day

Wasn't playing much factorio lately, so I saw this suggestion only now. I don't think I'll be able to make units for this(unless I do it like equipment shenanigans and this might be the right choice), but shrike should be possible. I think. I'll probably add something like this when I get to factorio back again.