Thanks for all the hints, I will try that soon! However, reviving the full DnD potential will surely happen in separate threads and PRs. This one is ready now, again, at least from my side. Please see the updated description above. I hereby confirm that the latest version again does not show any regressions in an up to date Squeak image. @nicolas-cellier-aka-nice Would you mind to review/squash-merge again as soon as the checks have completed? :-)