So currently bombers are worst equip for breaking blocks and hitting switches out of all play styles as you have to charge so the simplest way to fix this is to give A) all bombs will get a first attack that only throws a small bomb shaped projectile that only causes breaking of blocks and activation of switches.
B) give bomber armor this buff and make it a use key to activate.

On a side note the armors are obviously lacking in verity so I suggest we change the normal bomber line to pricing, keep merc elemental, make volcanic shadow, and give a notable buff to mad bomber and remove the elemental defense.