Not only that, but a simple option to change the color of blocks would have been nice... even a selection of only 4 different colors would have been ok! I didn't expect stage builder to be real complex or deep, but seriously, they could have given us a little more variety with the BG's and colors. All the stages look the same... dull grey... how boring.
I want to quick bring this to everyone's attention: Stage builder is new to smash brothers, and therefore is not going to be the most fantastic stage builder ever. If the Smash series continues you can expect additions, but for now, its untested and shouldn't be expected to have epic amounts of variety.
Anyone play tony hawk? When was it, exactly where you could start actually building stages. The third game, I believe? More over, how many background were there in Tony Hawk, a game where Backgrounds and Schemes were even LESS important, and therefore easier to actually create? I believe there were 3, maybe 5 at the most. Keep in mind that Tony Hawk was a game that almost REQUIRED variety for a good stage builder, and yet they kept perfecting it and adding more variety as the game progressed.
The possibilities for a stage builder in smash are untested, and this style of gameplay is not one you would imagine would have a stage builder (although I'd been praying for one since 64). Please, remember that variety comes in time, but in early stages it is difficult to add too much when it is an untested area of play.