Hi I'd love it if there was a simple keystone node. The current "quad layer" node is clunky in my opinion. Firstly it changes the image to layer which strikes me as very odd.
Also there isn't any node to crop/mask shapes from the image (ie diagonal lines across the image).
So I'm proposing a simple node of the image class that can keystone the image... and while I'm here I'm proposing that it can be used to diagonally crop pieces of the image too.
Feel free to point it out if there is one already.