I'd love to see another Ruff n Tumble game, and another Mr Nutz game, maybe with more platform action and a bit less of the walking around the whole world figuring out what to do next bits. And this time, Ruff n Tumble could have parallax backgrounds, and if it was AGA only, could have twice as many colours, twice as much animation, larger sprites, even more hardcore music (with a CD32 version having CD music and an animated intro). YEAH. And Mr Nutz could be full-screen and AGA too. These games looked incredible for OCS games, imagine them on a CD32 or A1200.
If I knew someone who could program, I'd do all the graphics and level design for these games if they could program it, and there are plenty of tallented MOD musicians out there who could work on the music.
Another game I loved, and would love to see a remake or sequel of, is Wishbringer, the text adventure.