Wouldn't that make Doom much harder? In-game adversaries would take advantage and execute vectorized attack patterns supported by cached-ammunition flow. Would Doomguy be able to survive at all?
You should be okay with your Reciprocal BFG as a force multiplier.
EDIT for those who may not have understood my comment. You would be hard-pressed to find a Cray that performed division and would instead need to perform a reciprocal multiplication in constant time.
