I have a feeling this is going to shoot your expectations up, you are in a really sensitive place now, and this might make you sad.
Someone I know who is a WAW really wanted to decorate a tree at her STBX's new place because she felt bad and wanted him to have nice things. He declined. It was too tough for him, I believe.
I think your S19 is onto something....... starting a new tradition might be healthy for you. You can be in charge of decorating a tree the way you and your kids would want. I honestly think with your level of attachment (which is soooo incredibly normal) it's just going to be harder. I've been there, done that.
