Having a block that's not normally supposed to be see-through be see-through could cause problems. You've probably noticed that you'll also be able to see through the world if the bedrock touches any other solid blocks. It doesn't really work.
Also, any good map-maker will do something more like, that doesn't require the user to have a special resource pack.
You can download this Resource pack here: http://adf.ly/WbBPX
Also, any good map-maker will do something more like, that doesn't require the user to have a special resource pack.