One I particularly remember is Golden Hibiscus. I first saw it at an AHS Convention, maybe the first one I attended, Charlotte, NC, in 2003. It won a convention award because it was spectacular. No one had ever heard of it before. The hybridizer was from AL, and hadn't introduced many ( or any) others. So I bought it, loved the intense color, but eventually gave it up. It was registered with 14" scapes and ( I'm not looking, going only on memory, which may not be accurate. Luckily, scapes grew about 17-18" here, but blooms were large, close to 6", so they looked somewhat out of proportion. Still, a beautiful bloom.
Golden Hibiscus:
Another that I kept for longer than I should was Pat Stamile's Shimmering Elegance. It had the most beautiful pink blooms, but absolutely awful, sucky foliage, no matter what you did to remedy it. I've read and heard several comments that some plants in Pats " pink line" ( he had a lot) had bad foliage , a genetic problem going all the way back to Fairy Tale Pink, which I grew many years ago. the foliage on that one was bad, to the point that it always went summer dormant here.
Shimmering Elegance - beautiful bloom, awful foliage