Yes, I do but I would prefer they be famous for good reasons. I also think the more the better to show that we are not uncommon and make strong contributions. Unfortunately, social expectations also play on how much this would shift things. For example, imagine the reactions to Steve Buscemi versus Matt Damon coming out (hypothetical cases). The image and characters they play get superimposed on to our perceptions of them as people. I think it is safe to say one would make a bigger impact from an immediate public view than the other. It gets better if one of the people are American icons that come across as gender stereotypical so imagine Clint Eastwood...
I really liked the above scenario, then I thought....Hmmmm.... I wonder though.... Maybe it is more important we are all out? The more the better. If I am not mistaken perceptions of trans people improves when we know a trans person and have had positive interactions with a trans person.
We are siblings, co-workers, friends, name any number of careers, and do all sorts of amazing things. I have my plan in place with HR to come out at work and I was asked if I want to remain sitting in such a high traffic area. I am an introvert so I never liked the spot in the first place but I said no. I think I need to stay where I am. It is important that the organization sees me contributing. Other non-out people also will see it is ok. Am I scared? Darn right. But I will do it anyway.
Now, I have been asked to help build tools and ideas to make the process easier for trans people. We have the policy at work but what is our toolkit to make navigating action plans, id change, our benefits for ourselves and our partners easier to understand. I also remind them our community varies and doesn't end at the literal point of transition to our names and gender expression. Basically, we don't need to be famous. Although everyone needs to be safe too!