I wonder if those blue boxes cause any additional lag? Not a large source I would think, but being able to turn those off too would be nice.
I think having some kind of abstracted salvage system, with less harsh calculations, would be much better.
Having 5 people salvaging planets at once would be too much.
Edit: If you salvage a planet's plate, it could just do meta-data "salvage damage"?
As was suggested with planetary extractors, hand-mining would remain. Ore could be put into larger veins(maybe there could be some small ore on/just below the surface).
We then have 3(counting planetary extractors) different lagless planetary mining methods.