Thanks for the question, I hope I am able to articulate my feelings on this, I have been thinking about it all day so here goes.
I guess you could say I already share quite a bit of my feminine self with my children. Physically and emotionally I am some what androgynous in my male existence and emotionally many of my feminine qualities show through. I will give you a perfect example, I was helping my older boy 13 with a costume for halloween I did his makeup and quite humorously he said to me "Dad don't worry I won't tell anyone your just a big girly girl" I said what do you mean he replied "you sew, wear makeup, collect dolls, wear jewelry and you know more about fashion than mom" When I asked if any of this bothered him he said "no why would it" I am not quoting this word for word as it was some time ago.
I guess I just think particularly for my youngest, That my two personas for lack of better word would confuse him more than need be, as for my oldest well he is going through puberty at the moment, the last thing he needs is seeing dad in a dress.
For all my feminine traits and emotions, desires etc. (none of which I modify or hide) I am still very much thier father and do my very best to fill that role.
My boys have a wonderful mother so I do not want to compete with her (as if I could) or want them vying for my (Daphne's) affections. It is difficult enough for my wife and I when they play mom against dad. I could only Imagine the negative situations if ever one of my children went to my wife and said "well Daphne said it was OK!" which would happen eventually.
I also have to protect my marriage and occasionally as many wives of TG people will tell you. It is not uncommon to feel like they are in competition with "the other woman" and in many ways they are.
I do not want those feelings to extend into our family dynamic, having my wife thinking that she is not only losing (me to her) but also losing her children to her as well.
All things change with time of course but at least for now there would be way to much doubt and confusion.
I hope this answers your question, I had a great time sorting this out so feel free to probe further if I can elaborate.