Your changes look good, keep in mind that the map tiles will take a few days to update.

1) thank you for looking at everyone's additions to OSM. Including mine!
2) I have thought about this more. I really think this is a gray area. While playing soccer, every calls the fields by the number, like the number is a name.
3) At the same time, I think about a city's fire hydrants or street lamps, those have numbers and should be a ref. No one calls a street lamp by a number.