I have the Frontier module at the back and its blank ass is just sticking out with absolutely nothing to attach to it that wouldn't look like an eyesore or remove the shower. Like, just give me the ability to slap my fuel tank there or maybe a little radiator or something. There definitely need to be more options.

Still, I agree. While it has some shortcomings (like lacking descriptions & previews), the ship building and consequently being able to walk & fly around in and with your ship is amazing.