Although in a galaxy the size of ours, overlapping LTD hotspots should have a chance of occurring, provide resources at the rate the rate they were, but be very rare which they were.
What FDev should have done is something logical, like lowering the price stations are willing to pay while the supply is high and allowing the hotspots to be mined out without continuous regeneration.
If they had done that, we would still have the latest gold rush to try and jump on, but increasing it would be further and further away from markets to sell them at, incidentally making a mining FC needed and necessary rather than just convenient and providing specific goals and needs for gaining a FC as well as a player driven need to explore to find the gold rush rather than just "oh look, another systems has been discovered with nothing new in it, how interesting".
What FDev should have done is something logical, like lowering the price stations are willing to pay while the supply is high and allowing the hotspots to be mined out without continuous regeneration.
If they had done that, we would still have the latest gold rush to try and jump on, but increasing it would be further and further away from markets to sell them at, incidentally making a mining FC needed and necessary rather than just convenient and providing specific goals and needs for gaining a FC as well as a player driven need to explore to find the gold rush rather than just "oh look, another systems has been discovered with nothing new in it, how interesting".