I like how IGA likes to piggyback on other games' success to decide whether or not games should go in a certain direction.
Also I bet he'll even suck at making an 8-bit game. Just my thoughts.
Kind of llike what he did with Judgement, amirite? O wait, that was based on the Wii's controls.
Again, you seem pretty ignorant as to what a game producer does. IGA tells Konami the director's progress and writes the scenario. PoR's director, for example, was Satoshi Kushibuchi, while Hiroto Yamaguchi was in charge of level design.
It depends on who is in charge of the level design, seeing as that's said to be the weak area.