Many are trashing Mario World 3D saying it is not what they really wanted ... They wanted Galaxy 3.
I for one am very happy with Mario World 3D ... I am currently playing Mario Land 3D on the 3DS XL and am really enjoying it. I like the games isometric perspective and I like playing it with the 3D effects on High.
I believe that Nintendo not only needs more time to develop a Galaxy game simply from a development perspective ... it has to be more labor intensive than an isometric game. But also, traditionally, 2D Mario games sell more than 3D Mario games, so until the user base is expanded, it may not make sense to release a 3D Mario game yet.
But I really wish that Super Mario World 3D was actually in 3D ... I have a 55 inch 3D TV and have enjoyed many games in 3D for the PS3 ... So I think it would be awesome if Nintendo came out with some Active (Battery Powered) 3D Glasses with the release of Mario World 3D ... that would be amazing !!!