Develop a Paint.NET equivalent for MacOS
Many Windows users (myself included) have found Paint.NET to be an awesome all-round graphics application.
Lean enough to fire up in 20 seconds (unlike Photoshop), but enough features to handle most day-to-day graphics needs (unlike Paint).
Now that some of us, willingly or unwillingly, are using MacOS, we're struggling to find an equivalent application for Mac.
GIMP can be slow, bloated and difficult to use. Other packages have unusual/quirky interfaces that don't quite hit the spot.
A port of Paint.NET (or rewrite if necessary) would be a god-send.