I understand... However, that 2.5m adapter looks kind of weird on planes when you have Mk.2 cockpit, then Mk.2 to 2.5m adapter, then 2.5m to S2 adapter, which is attached to mostly smooth S2 fuselage... the bulge is quite noticeable, especially when S2 is cut 2.5m... The same could be applied to S2 decouplers, that would come handy when creating F-111 style emergency capsule (but I have found a temporary way around that through docking port, poopload of struts, fuel lines and B9-PW cover parts), or to hollow S2 fuselage with small side doors (service module style) that might act as an short in-line cover for Mechjeb, KAS, TACLS and so on, when cargo bay is too long for your needs. But those are just small things, not that pressing... yeah, that might be difficult if you're trying to make the RAM usage as small as possible, and you would need new textures for top, bottom, both sides and whole thing covered in heatshield... or maybe not... dunno, I don't know much about texturing, and even less about what is possible in KSP or through Firespitter on that regard, but maybe you could have two types of textures (two .dds files), one shielded, one non-shielded, and have every texture separately applied four times on part of the part's mesh (top, bottom, left, right), and just switching which texture would apply for the part? Also, what is the fate of the Concorde/Tu-144/XB-70-style S3 cockpit?