Pixel Processor - Write to target pixel
Currently the Pixel Processor can only write to the current pixel using the data from the target pixel.
It would be useful to write to the target pixel instead, so a source pixel can be moved to the target for example.
The reason this has not already been implemented seems to be due to technical limitations, according to a post on the forums.
If a dev ever thinks of a solution for this, it would be wonderful to see it implemented.

Sadly this is the way the pixel processor works for now: as each pixel is processed individually, it is technically not feasible (even if we can imagine the benefit).