Mine control tower size currently is 3x3 squares max.
Asteroid radius is random and depends on space station size.
I have space station XVII.
I only get asteroids ~90-135 radius.
Asteroids with radius range 80-90 fit in 3x3 squares.
Asteroids with radius range 110-120 fit in 4x4 squares.

I want to be able to choose asteroid radius range before scanning.
I want to increase Mine control tower max size to 4x4 or 5x5 squares.
I want to be able to switch asteroid location after I first clicked on the ground. Currently I can only confirm delivery or press Esc.

I want an option for Mine control tower to retract all excavators after finishing mining. Currently I have to manually move them to base before dropping next asteroid.
I want asteroids to show additional range of destruction and mark buildings in that range as red. Currently buildings can be destroyed beyond asteroid radius. (in about 1-2 small squares)

I second an option to look for a specific diameter.
At the start of asteroid searching you get 50-80 range. As you bring more down, the size increases. Thats fine up to a point.
I have a few landing zones, but the infra around it gets damaged or altered if the size is too large, not ideal. Massive scale players face the other side of the problem, too many small ones that will get devoured in minutes.

Now I can scan forever and use a lot of probes just to find the right size and composition, I have plenty of probes, but it isn't fun and sometimes frustrating when nearing the end of supply of the previous one.

Since we are advanced enough to bring these down, we should have the tech to search for specific sizes.
We could have a trade off where we specify the size at the cost of a multiplyer on the ammount of probes needed.
Want 50-100 range? 80 probes needed. Want 90-100 range? 160 probes needed.

I feel if we want specific composition tho, it should be even more pricy, otherwise things become too easy on demand.

You can consider adding an option on the search panel to increase the search price appropriately:
The default price is 40. If the radius is locked, the price is 80+. If a certain mineral is locked (if allowed), the price is 200+