I'd really like it if some fancy, decorative valences or little arches (for cabinetry and the likes) would be added to the library collection. Adding them into the library could help designers show clients an even more detailed mock-up of their proposed kitchen.
Little tricks like using Complex Profiles and Textures could solve both of your requests and do not require a ton of work once you are proficient in AC. Perhaps you could provide some pictures of what you are thinking and I can be more specific.