Is multiplayer crippling Mario 3D World's level design?

[marley]

curl-6 said:

Stefan.De.Machtige said:
Are people still not getting it?

3D Mario is now going to be split up in a multiplayer and singleplayer version. This version can't be ruined by multiplayer since that's the entire focus. That's the point.

"Please understand..."

Do we have any real guarantee they will continue with  single player Mario 3D though, or will they throw that in the trash in favour of this NSMBified laziness?

About as much of a 'real guarantee' that Mario 3D World will be bad or have bland level design based only on the first few levels?