We have a few 2D low energy electron diffraction LEED images (field is Physics/Surface Science) that are currently not yet published, the analysis is not complete nor their implications fully explored.
But they would be really nice to include within a larger group of images in a paper I'm writing now about how to analyze these kinds of images, because they represent special cases - they're "edge cases" so to speak, and honestly their patterns are particularly intriguing. One might consider using one as a first or "lead" image for the current paper.
I think the main and most obvious reason not to include them at this point is to avoid being "scooped" - somebody (with plenty of time on their hands) figures out what it is, how to make it, then publishes a full "first" paper before we do.
Besides that what would be the biggest disadvantages and risks of publishing new raw data as one of a group of instructive examples while planning to publish a full analysis of the data later?
note: the necessary information for the description of the image is minimal, essentially "Depositing X atoms on Y surface sometimes produces the following diffraction patterns."
different but perhaps slightly related: