Yeah, that's how I did my lol-delta-v Near Future ship. Work in 2x symmetry, place a stage with accompanying struts and fuel lines, then copy and paste that. I also built it as a square spiral, like so, which I found seemed more stable than a hexagonal packed design. 65438 72127 83456 But it's still more complicated than some other staging strategies, and I still ended up with a missing pair of fuel lines. For an interplanetary ship, this is valid. For a launcher less so. I don't need more delta-V per se but more payload to orbit. If I've got an asparagus lifter built for a 40 ton payload, and I try and slap a 400 ton payload and more asparagus boosters with it, I'll end up with 1/5th of the TWR on my core stage. Since said core stage actually has the lion's share of the delta-V, chances are I won't make orbit.By contrast, if I've got a serially staged lifter built for a 40 ton payload, and I want to lift a 400 ton payload, I can gang ten of those lifters together and I'll have exactly the same TWR at all points in my launch. If it's something like 45 rather than 40 tons then sure, adding a couple of boosters to the asparagus lifter will work. But adding a couple of boosters to the non-asparagus lifter will equally work.