Allow me to clarify. Single player is bound to exist. I don't doubt that classic and maybe all-star mode would return. Rather, like I said earlier, "without Sakurai, we probably won't see anything to the degree of the Subspace Emissary" again. The reason is simple: People don't buy Smash Bros. for single player. It's nice to have and I'm glad they went the extra mile with the adventure mode, but ask any Smash Bros. fan and I'd bet that most of them would have taken more characters, stages, and other multiplayer options over the Subspace Emissary. Things like extra stages and characters can be fun for years, while after playing through adventure mode a few times, if not just once, many are likely to never touch it again.