Hey vmicho!

You've changed my traffic calming island (https://www.openstreetmap.org/way/1177549923) to landuse=grass and barrier=wall.
This is *definitevely* not `landuse=grass` as seen on the swisstopo imagery, it's a little bit of shrubbery and mostly stones/gravel.
Please don't just tag for the renderer, i.e. so that this shows up as a green circle on OSM Carto!
Try to add correct data to OSM, not just to make it look pretty.

Also, if you *really* insist on doubly-tagging this landuse with a wall around it, then please also add a `height`-value.
IIRC when I passed this roundabout on bike it didn't really look like there's a 'wall', and the shadows on the swisstopo imagery seem to confirm this.

In addition you've added https://www.openstreetmap.org/way/1181861983/ as traffic island. In my opinion and according to the wiki this tag should only be used for the structure that is *not* possible to pass by vehicles. In my opinion here this looks like it could be passed by cars and trucks, hence I would not tag this as island. See https://wiki.openstreetmap.org/wiki/DE:Tag:traffic_calming%3Disland for an explanation.

Greetings from Bern,
habi