Considerations for other seasons:
214. The liturgy of the hours takes on a paschal character from the acclamation, Alleluia that concludes most antiphons (see GILH 120), from the hymns, antiphons, and special intercessions, and from the proper readings assigned to each hour.
215. On Christmas eve it is fitting that by means of the office of readings, a solemn vigil be celebrated before Mass. Night prayer is not said by those present at this vigil.
Anybody with experience in praying the OoR before Mass? Given the metamorphosis of Christmas Eve into its own feast and the fairly widespread use of the midnight readings, not to mention the occasional pageantry, I think this particular implementation has some serious obstacles in the way.
216. Morning prayer on Christmas Day is said as a rule before the Mass at Dawn.
Other Solemnities and Feasts of the Lord
217. In arranging the office for solemnities and feasts of the Lord, what is said in GILH 225-233 should be observed, with any necessary changes.
Any thoughts on Christmas, Easter, or the occasional use of Lessons and Carols before Midnight Mass?