Well, there's at least one whole convention just for yaoi.
It's an "adult content" panel. You need to be up front with the convention about that and make sure it's okay with them - one reason you might not have seen any is because the convention might not be comfortable hosting that type of adult content especially if they don't have a place where they can easily gate entrance based on ID that's out-of-the-way enough to not attract negative attention if the rest of the convention is trying to be more family-friendly.
You can host a panel about it without it being "adult" but the complaint about softcore just makes me think that this is going in a direction that not all conventions would be okay with. Some do have "adult" sections or times of day, but it's something you'd have to talk to them about and be clear and specific about the content you intend to show.
Actually in the pipes:
- Remaking Ser Loras doublet.
- Luke Skywalker, A New Hope
- Wind Waker starter costume in swim material
Eventually: Paul from Dune, Faramir, Harry Sullivan