It would be good to be able to control the switching on and off of SIM cards using Bixby Routines. People may have multiple SIM cards and want to keep some of them on only at certain times of the day, and so the ability to turn them on at a specific location or time of the day would be a great feature to add.
Yes, that would be a killer feature.
For now, I have to disable sim card 2 every day I come home from work, and enable every morning.
It is painful to do that almost every day, and sometimes I forget to do it...
I would need that opportunity too. When I get home from work, I have to manually set which sim I want to use. It would be nice if Bixby knew that.