No, scaling down 576 to 480 wouldn't be incorrect...

And it's not an "NTSC format only screen", it handles the PAL colorspace quite well but the plasma panel only has a vertical resolution of 480.

But I think I'll give up on this, Meridian Support did understand but couldn't say anything about if it would or could be implemented.

HD621, G98DH, G68ADV, Bc Acoustiqe ACT A3, 5200C DSP33, NuForce Reference 9 monoblocks, 2x SB3's, Velodyne DD-15 & DD-12 Subwoofers and a Meridian sub.