Sort of like de-caf coffee, which to me defeats the purpose.

It sounds like you are trying to create a new holiday from an already established holiday. That sounds like the territory of TV executives and fast food restaurants. Since most of the religious symbols and rituals were adapted from pagan rituals and solstice celebrations you could make a point that most of these items are secular.

I guess the biggest question would be, why bother? You haven't given a reason or a purpose for doing this other than not being comfortable with celebrating Christmas, Hannukah, Kwanza, or Solstice as your mid-winter holiday. All of these holidays were developed for specific reaszons - creating a new holiday just because you aren't comfortable with one of the existing ones really would be a hard sell.

I'm not questioning your feeling uncomfortable with the religous holidays, that is fine. I just question creating a holiday for the sake of having a holiday. The reason doesn't have to be religous, but you need a good reason.