Because IAS is useless for both guns and bombs, I suggest a new UV for guns and bombs only: increased attack range.

At Maximum, guns should shoot maybe 1.5-2 times as far, and because bombs have about 45% CTR reduction with a Maximum UV, bombs should have 1.5 time radius. (1 / 0.55)^0.5 = 1.34839972. The number inside the parentheses represents the increased bomb placing rate with CTR, and the square root is used to convert area to radius. In my opinion, however, placing several smaller bombs rather than one large one is still better, so I bumped the number up to 1.5.