No we can't. A same key can be different (more signs, signs revoked, revoked key).

When there is a key on a website, FireGPG asks if we want to display the original key or import it (when the option for this is enabled). Can it checks for already-imported keys, so that we know which key has been imported and which not (different colors and text) ? (becareful when the key is present more than one time on a page, it should update every panel).