Naivete Okay
The current pressing issue is the rate of small impacts.
(By "small impacts" I mean the asteroid and cometary strikes that take out regions and continents, instead of killing off species, like the "big impacts" do.)
Current estimates rely on counts done for a small part of the lunar surface, counts which were done decades ago. Aside from sampling bias, the Moon also has a large gravitational companion nearby - the Earth.
Not only are Mars crater counts vital for safety here on Earth, no sense of Mars geological data can be made until the counts are done, as until then there will be no way to reliably date any geological features there.
EP