The way this issue is framed is all wrong, I think. The question shouldn't be "what can GGs do for me?" Instead, ask yourself what is it that you bring to the table? What does she get out of you being a crossdresser? The most likely answer is - nothing. In fact, you being a CD is probably going to be a liability. My wife's attitude toward my fetish runs from enthusiastic participation to mild irritation. But I know that she would have never sought someone like me out unless I had other qualities she favored. Overall, I've been a big disappointment to her sexually. I indulge her weirdnesses and she, mine but its often a chore for both of us. At least I don't suffer from gender dysphoria other than sexually or she would have been gone long ago.
Sometimes, I think that if I had it all to do over, I would have GG friends to hang out with and do stuff with but I'd leave the sex out of it. I wouldn't get married or even cohabitate and I would have gotten a vasectomy as soon as I was able. I love my children but being a father in this world has just been one long heartbreak. I think for the young CD that has to be something they seriously consider. Don't waste your life looking for unicorns. Do something productive. If a unicorn happens to find you, great. But don't expect it.