Without taking either side in a "is a buff required" debate, but just using this as an exercise in rules brainstorming...
Enact a change to the procedure for resolving bombs.
When rolling attack dice to determine bomb damage, if the ship's agility value is higher than the number of dice being rolled, you may ...
either (can't decide which I like better)
... cancel 1 [Crit] result.
or
... reroll 1 [Hit] or [Crit] result.
Of course, this may just switch Prox and Conners to being the preferred mines.