Slick as always!!!
Bay cryo tanks wont be frosty as they are insulated
you could also have frost amount change with variable Insulation thickness/MLI layers (if/when boiloff gets implemented)
Colonies are absolutely needed for Intersteller
Unless you just want to do a Hail Mary
well even that would benifit from Orbital Solar Farms which are basically orbial colonies
Also maybee add a segment with thrust termination ports aka. blowout panels. Thats the only way to shut down a SRB in flight (chamber pressure drops untill the motor flames out)
so we can make acurate Minuteman and Peacekeeper replicas:LOL: