Various Martian landers

I am considering such Earth-to-Mars missions as don't have biotics, just cargo. Much the following applies to our own dear Moon or maybe Ceres, Callisto et al..

Among the first unmanned Starship landers (as opposed to the guinea pig flyby) is to build a propellant-plant, with robots. By "propellant", in a mid 2020s matrix, that means Raptor 2 propellant, which means oxygen and methane (which on any of these airless worlds can be chilled easily, underground). As byproducts of the process that's potable water and oxygen, with (for Mars) an argon / nitrogen mix to pressurise it all. In short, "propellant" is life-support.

The cargo is packed tightly, and sent over in micro-gravity. For raw material who cares about life-support en route. Who even wants reactive oxygen, or heat. Will need some radiation-shielding but, just enough to keep the flares and/or cosmicrays from the electronics.

When will these landers need that special armor? I wonder if the vessels will ever get back home; the plan is to use the (ex-)Starships as additional pressure-protected habitats. Wonder what happened to those glass domes; must've been reading Handmer.

And where the main chassis can be dragged down into a lava-tube they'll never need a shield on the surface either. Down there they should be able to inflate a series of tents until they can seal it all up with a Total Recall style series of thick metal airlocks which, I guess, those old Starships can serve as gates. Only such landers as bring humans to the surface need leave the surface for Earth again.

Or not for Earth... and maybe not from it. For the future, the Martians / Loonies / &c. will be building their own lower-key "Starships".

For Mars, based on The Martian; they can be shuttles up to Deimos with weak (plastic?) outer shells possibly depressurised. Such need rise only so far as the Phobos/Deimos tether system, until they get rid of Phobos and can just take the Deimos lift. Deimos should be the stage of Mars' commerce with the rest of the system, beyond merely refueling "in space".