Masahiro Sakurai has created some incredible games, but he's most commonly connected with the Super Smash Bros. series.
Sakurai is forever hinting that he can't be in charge of Smash forever, and in a recent interview with Japanese magazine Famitsu - which is in the process of being fully-translated by the folks over at Source Gaming - he repeats this prediction, even suggesting that he could transition into a consulting role instead of being fully in-charge:
…Well for me, every time I always think, “This might be the last one.” If it’s a request from a client then I’ll consider it, but I do wonder, “Is it alright if I’m not the director?” It might be good to take on more of a consulting role.
It's a given that Sakurai can't keep directing Smash entries indefinitely, but could this comment suggest that he's already aware of the scope of his involvement in the next instalment?
If, as rumours have suggested, Smash on Switch is simply a remastered version of the Wii U and 3DS outing, Sakurai's involvement might not be that important as all of the groundwork has already been done.
However, beyond that, we could see Sakurai providing advice on the next "true" Smash sequel rather than sitting in the director's chair - a process he has already admitted is quite taxing.