Has anybody tried this:

Take a PAL DVD. Demultiplex it. Use pulldown.exe on the video stream to force it to 23.976FPS and set the pulldown flags. Use something like GoldWave to timewarp the audio to fit. Then write a DVDR and play it back in PAL60 mode?

What you have then is effectively a 720x576 NTSC Film DVD, which is a totally illegal format but is it likely to work in any PAL DVD players? The aim here to get the quality of PAL but without the pitch shift and speed up.

Dave