What could be more “heavenly” than a country whose inhabitants transcend death and inherit God Himself?
That this should be in a literal Land that is inherited “forever” is no contradiction at all.
Even if we discover by ‘progressive revelation’ that the Land will someday be transcended by a new heavens and earth, this does not make the thousand year reign of Christ on earth, or the promise of an eternal inheritance of the Land any less heavenly.