Cool thread, and no apologies needed from my perspective. I don’t know what steampunk architecture would look like, but you should post some examples of what you would like to make. There are a lot of creative folks on the boards, and they may have some ideas.
Another place you might want to look at is this thread. Or this one. I don’t know if there are any examples of steampunk, but there are some amazing creations in both. Good luck!