well, the division he's from (BD6) practically outsources all their work anyway. I do think Nintendo has to have had some hand in the creation of BD11 though. while Asano mentioned that multiplatform wasn't off the table for future games, I can't help but feel the closeness to Nintendo is their main driver. it'd be stupid to cut them off when Nintendo, 1) made up the bulk of your body of works, and 2) was responsible for 2 (soon to be 3) of your best selling games
hell, OT was one of the games revealed at the January show, I wouldn't put it past Nintendo to specifically ask for another Asano game