I would like to see either copies of the vacuum-consuming recipes without vacuum that only work in space, or a free recipe that makes vacuum from nothing in space.

(Maybe barrelling vacuum in space and delivering it to the surface is too silly, but really, if steel barrels can contain petroleum gas or sulphuric acid, is vacuum that much of a stretch?). Barrel logistics is probably worse than just using the current vacuum recipes, but it’d be cool to have the option so that should some special situation arise where it’s optimal, the player has the opportunity to realise that.