Here is the interesting part:
D) There is no redistribution of resources, it works like a hole. You dig a hole with extractors and it fills back in over time. If you dig at the same rate as it refills the hole it will never empty.Humm, looks like we won't need to move extractors around too much. Once you have the pattern of resources on a planet, the concentrations may go up and down due to extraction but the initial picture is pretty much were things will stay. So for the most used planets you may want to spread yourself over a few medium level concentrations if you thing the other players will concentrate on the richer deposits and empty them out. In wormhole space however go for the good stuff right away as the number of players will be restricted.