No leftover parts from the Mars Rovers they could just modify ? LOL
Maybe, but the Mars rover was solar powered, that doesn’t work so well in permanently shadowed crater bottoms.
Stuff that was designed to work in the sunshine of Mars on a near 24 hr day night cycle and never gets anywhere near as cold as a permanently shadowed part of the Moon looking up at 4 Kelvins cold of space. Metals become brittle, batteries freeze, electronics fail, lubricants don’t.
“No leftover parts from the Mars Rovers they could just modify ?”
Excellent point. Even if the rovers needed a few modifications, why not just send one or two to the moon? They’ve got the plans, it should be cheap!
And why can’t we use the same platform for Venus?