Hmm tiled backgrounds wouldnt really make it possible to re-create the orginal as test content because static images and tiles are completely diffrent
However it would have pesudo 2d tile support because there is the static 2d background image, then you have animations placed onto of that, the game sprites and then "bits" of the 2d image again which is what appears on top of the sprites..
Or you could make another app with a tileset to allow creating of tile maps that get saved as big static images I suppose, could have nice features like prebuilt platform sections to copy paste in.