3/4 - Artist website with a fallback (and maybe also an option to switch to album website, and turn the fallback off) sounds logical to me (note: I don’t use the plugin)
@aerozol As a general rule I try NOT to complicate both the plugin and the UI with options pages unless it is absolutely necessary. Exponential growth of options in order to give users every possible choice is not a good long-term strategy IMO. Which is why the choices I put up didn’t include any with options.