I’ve just come back from a couple hours of editing in my area using this very tool and it is indeed a great one.

It allows for users such as myself - who otherwise probably wouldn’t have gone through the effort of searching what info I could add to OSM - a very simple way to contribute to the project.

It only offered me to add, as you said, street names, opening hours, road surfaces and also building levels numbers. Maybe in a future version it will also provide a simple way to add missing house numbers, since almost all of them are absent from OSM in my area, which I find it to be one of the main drawbacks when using any navigation app based on OSM.

This tool is definitely promising.