What counts as a sensible value? The whole point of the library is to be explicitly about what kind of date/time data you're working with, because different kinds of data have to be handled in very different ways.
If they at least had a Temporal.nowlocal() and a Temporal.nowUTC() that returned a ZonedDateTime set to the local and UTC timezones respectively, that would be 95% of what developers need in practice.