Principal negative as I can imagine it is the constitution of the regolith. I remember reading that one of the concerns about the original lunar programs was how soft and deep the regolith might be at the landing site - if it's loose and silty and 6' deep, then that's going to get tricky.

Sure, we have much better radar and composition maps of the lunar surface these days, but it strikes me that it's still not as 100% as landing on a barge's [presumably] metal surface or concrete and Cape Canaveral.

The tiny landing legs (more like landing pinkies) of Starship concern me a lot, but whatever would be going to land with this approach would have reasonably robust landing legs with feet that can handle soft surface.

I'm more worried about sandblasting the surroundings.

Aye, that's it! The huge and wonderful mass of a Starship plonking down three spindle-thin legs onto and into luna incognita.

I'm sure smarter people than I have thought about this, but it was a thought that struck me when I saw the mockups in the NASA lunar bid vid a wee while back.

Well... At least it's more than 3.

Still, by then the ship should be somewhat top-heavy and those six landing pinkies do not inspire much trust.

OTOH, the people designing this are smarter than we are and much more experienced than me in rocket design, so they may know one or two things I don't.