Hi,
the PTS has a great feature which shows if a package is involved in an
ongoing (library) transition.
Not everyone checks the PTS though before making an upload.
As a result, it happens quite often that uncoordinated uploads disrupt
ongoing transitions.
It would be great if dput could query before the upload if the package
is involved in a transition and present this information to the uploader
with the option to continue or abort (with abort being the default).
The release team tracks ongoing transitions and exports a yaml file at
http://release.debian.org/transitions/export/packages.yaml
Thanks for considering,
Michael