I would not be interested in SRV grind for materials. Delivering to the planetary base, sure but the SRV collects 2 items at a time. No thanks.I read this wrong and I didn't get what you meant first, but I thought that it was a great idea. There should be outposts that you can repair which have smaller amounts of material requirements, so it becomes more manageable for an individual pilot to do.
Same for surfaces but surfaces probably would also take a lot. But they would also need some kind of SRV scavenge to be delivered. They would need a certain amount of planetary RAW mats and maybe also mechanical scavenge that gets spawned around a damaged surface port.