I run Fallout with the Hi-res patch at 1024X600 on my netbook (it plays very well on a netbook) but of course the Hi-res patch is only really giving me a bigger window. I would love to see a release the way you said. I'de be happier still if it was an Amiga port. We can but dream.
I managed to get Quake running in
1280x200 in AGA on my 1200 but I was taking some strong meds at the time.
The C2P cannot be helping the speed much, maybe when it goes direct-chunky (Indy Mrk2) it will get another frame or two