Cool! Sounds reasonable.
I found bench:type=swing as a suggestion for that situation here: bench:type=*

Thanks for adding so many details.
In node/13738164589 you added an amenity=bench which is at the same time leisure=swing (the later one should rather be playground=swing)
Are you sure that this should be a bench and a swing at the same time?
Best regards!

This changeset contains edits very far apart from each other. Please consider doing such edits separately.

*thumbs up*