I would like both to be destructible if they're shot or hit by another explosive, I'm aware freeze traps do this for explosives, but it's annoying to have a route basically cut off because some assault (I do this too) has a mine planted and is waiting for someone to walk over it.
This has been brought up plenty of times before. Personally, I don't care too much either way. The trick to getting rid of a bomb is fooling the assault into setting it off without killing you. Not that hard once you learn the damage and knockback angles. When I'm in a match with people I know, I'll let a teammate know that I'm going to eat the bomb and tell him to go in right after while I wait to heal.