Yes, but it's:
1. expensive
2. not magic - your power level and specific engine design may make it a conversation piece

You would also be faster if you center-drilled every fastener, like they did with Moto-X in the 1970s. 10 hours of labor to save 1 lb.

Expanding on my prior post: given a clean sheet of paper, a "V" engine can, and has been built with separate crank-pins at the same position (G.M.C. 301 etc. V6), which would allow a counterweight between them. But if you don't need it, it's just one more thing for the engineers to argue with the accountants...