@Hyperspeed:
If you put the VGAOnly file in your DEVS:Monitors/ most modes including Multiscan Productive will get a frequency-bump. I think Multiscan Productive ends up at 31.44kHz, 60Hz. I must say that the Euro72 Produductive screenmode very nice, almost no flickering at all with its 70Hz and a extremely smooth moving mouse-pointer.
Btw, the DCE 8:4:4 might give you a theoretical 32768 different colours, but as only the red colour-channel has 8-bit depth it looks pretty much like OCS/ECS.
I wonder how many flickerfixer/scandoubler solutions made for AGA that actually features 8-bit depth for all colour-channels. The only ones I know of are the PicassoIV flickerfixer and the DblScan 4000 scandoubler.
It is not very hard to find out if ones flickerfixer/scandoubler features 8-bit depth for a colour-channel or not. Start a paint-package with AGA support that can edit palette-colours ok. In the palette, choose to edit the background colour (so you will be changing the colour for most of the screen area) and try increasing say red from 0 to 255 - one step at a time. If it does support 8-bit for that colour-channel the background-colour will change for every step, if it doesn't you will only see changes to the background colour about every eight increase. Then just continue to the next colour-channel und so weiter.
/Patrik