I always figured TBH, a dream team of IGA, Cox, Yamane, and Ayami Kojima.
IGA has the vision, Cox has the funding and well, his stage design and platforming is much more interesting than IGA's 3D attempts, especially when he gets the mood right, (the castle segments were amazing) And Id have to say his combat was a bit more fun than Lament's was. (I actually felt satisfaction upon hitting enemies) Yamane and Kojima give the atmosphere with their music and art respectively.
maybe throw in OScar Orujo (is that the name?) for good measure.
TL;DR, Combine the LOS Team and the IGAvania team, and you've got yourself a winner 3Dvania.