Import .jpg, .bmp, or .png like ZC can use .mp3, but have the function call to it like a drawtile, DrawBmp(layer,startx,starty,endx,endy,cset,rangle,anglex,angley,rotation,8bitbool,opacity)
Where 8Bit bool true would mean it would automatically render and recolor the bitmap using all 256 colors, and false would mean use the CSet indicated in the script function.
This would make the tileset useful but pert near obsolete, and make ripping graphics from all those other sites or user-drawn sprites much faster and with less hassle, because most sites don't align their sprites to ZC specs, as they already have x,y sprite graphic ripping for other programs.