Do the sample tubes have 'grab' handles?
Although I think the mission is great science and is very much the Sort Of Thing humanity should be doing I don't quite understand why this mission drills the samples and 'bottles' them and a later mission will collect them. Sure, we (humanity) don't yet have the ability to bring things back from Mars but when we do have that ability won't it be easier to go with a drill capable of getting fresh samples?
I hope I'm still ticking over when we do get them back.