Well we celebrate the Resurrection each Sunday so I don't see a problem with celebrating something important more than once a year. I will certainly be thinking of, and remembering in prayer, all the Old Calendarists who are celebrating that day.
In fact my bishop and some of the clergy and lay folk of the BOC will be with the Eritrean Orthodox that day I think keeping the feast with them, even though we keep it on the 25th.
I would be fairly happy using the OC though I understand the positive benefits in our context of using the NC.
Next year I will try and make St Nicholas' day and Epiphany more important in the family.