Checkerboardbackground at PNG export

[schwarzgrau]

I know this is something mentioned before, but I guess it's something like a forgotten feature request, since it was only mentioned in another thread. So I decided to start a new thread about it.
It would be really nice if you could see a checkerboard instead of a solid background if you export something with transparency. At the moment it's a bit confusing to export a PNG with transparency, cause you only get the checkerboard if you choose Premultiply (which is obviously the wrong choice most of the time)