About Asteroids and Space

For the current game's final technology, besides FBR, another asteroid mining is considered useless by many players in the community compared to a large number of contract transactions. It not only needs to avoid causing damage, but also has higher costs, and most importantly, it is not irreplaceable. Since weakening the contract would make the existing saves incompatible, I was wondering if asteroid mining could become necessary, such as adding a material that can only be obtained on asteroids. And now the game ending seems too hasty, so I also hope to add some other high-tech things.
One possible option is iridium, a metal that is quite rare and dispersed on Earth but relatively abundant in asteroids (the key evidence for the extinction of dinosaurs due to asteroid impacts is the abnormally high iridium content in the geological strata at that time). Iridium can be used for advanced electronic components and alloys, but its large-scale applications are limited.
Another possible candidate is lithium, which is quite common in the universe and is closely related to batteries and nuclear fusion. Al-li alloy is also a high-performance special material. However, it seems somewhat inappropriate to keep pulling lithium asteroids to maintain the continuous operation of fusion reactors.
In addition, the space research points is currently only used for 5 technologies, while the others are final cyclic addition technologies. I hope it can become more useful, so that the continuous operation of the space station will become more meaningful.
Finally, I hope to add animation to the asteroid's fall instead of just one image, which may seem perfunctory (although I am also concerned that it may cause lag).