not to burst your bubble, but they already do....or did...almost positive Crimson Talon made a 6 blade head...i think 3 were smaller "bleeder" blades...but i believe it had 6 total blades....
cant cut much better hole than a 3 blade IMO...my buck last year had a perfect hole cut out of its ribcage...i would never guessed a broadhead would made a hole like that, i was expecting 3 slices....heres a pic...im just impressed by the hole it made...first bowkill...i wasnt expecting that at all....