Would it make sense to send better robotic analyzers there than to bring the samples back here? Fighting gravity and kilometers involves spending many billions on return; a lesser amount could be spent on surface activities.
We would need to move people and cargo back and forth eventually, so best to get started on that ASAP. Not to mention sample return has been done from the Moon & asteroid to great success, its a proven concept on how to get the most from the samples.
The issue is the size of some of these analysers. For instance, a synchrotron, which is required to non-destructively generate nanometer-scale 3d images of the samples are 3-4 times the size of a football stadium
An AFM can get atomic resolution imagery and is not the size of a football stadium.
An AFM is completely useless to identify the chemical elements, protein or crystalline structure inside a sample.
There are tools used in UHV surface science labs for that, in the same head as a AFM/STM.