Currently, when extracting an archive with a single top-level entry that is a folder, the "Open destination folder after extraction" option will open the parent even when the "Extraction into subfolder" option is unchecked. This makes it hard to find that extracted folder since it needs to be found among the other files and folders in the destination directory.

I want to suggest that in such a case, Ark should instead open that top-level folder rather than the destination folder. If you think that this is not a good default behavior, it could be a global setting, perhaps overridable before the extraction with an option. It would make it a lot more ergonomic in my opinion. It still leaves a case of a single top-level entry that is a file where this new behavior couldn't apply but it's definitely progress. The logic for detecting a single top-level entry should already be present since it is needed for the "Extract to a subfolder if the archive has more than one top-level entry" global setting.