I think the commodity requirements need to be reduced significantly, they're far too high for a solo player when you consider how many construction site slots even a really crappy system has; I have a list of nearly 40 candidates and all but 4 of them have at least 10 orbital slots.
Building just one outpost takes something like 8-12 player-hours of non stop hauling even if you have a carrier and a good supply of materials, so filling 10 slots with outposts would be 80-120 hours of work. Basic tier 1 starports seem to be about 3x more expensive than outposts, so that's 240-360 hours of work. And if you want tier 3 starports, that seems to be like 3x more expensive again, so 750-1000 hours.
And again, that's a crappy system and that figure only includes orbital ports and assumes non stop hauling with a fleet carrier. I don't know what the requirements of surface ports are, but if they're similar, and your crappy system also has ten of those, that can easily be another 750-1000 hours of work.
So we're talking 1500-2000 hours of work to fully populate a really crappy system with max tier orbital and surface ports, if you haul non stop, and if you have a Cutter or T9, and if you have a carrier. That's just stupid. I've been playing this game for years and my total playtime would maybe just barely be enough to max out one such crappy system. Things need to get buffed radically, this is an unacceptable level of grind.