Hello there :)

the validators like osmose aren't always right and "errors" can be ignored if false positive.

In multilanguage countries it is possible to NOT have a single "name=*" even though it troubles some renderers and you won't get a name shown on "the map". Still, no need to set a "name" without a language postfix.

And finally:
https://wiki.openstreetmap.org/wiki/Changeset#Geographical_size_of_changesets