Import PSD files
We know it's reverse engineering, but it's a feature that is crucial.
Roland Taylor commented
GIMP has code for this, but do we really want to go this route? PSD is a huge chunk to add. It would be best to let someone write (and maintain) a plugin.
I am little bit sceptical about this. Pinta is simple image editor and a lot of functions will not be available in Pinta. So if I understand correctly using Pinta and editing PSD file, could just broke PSD file in such a way that it would not be available to edit it anymore in more advance editing program like Adobe Photoshop.
It would be nice to explain what kind of features you are expecting from Pinta to do.