I posted this on the JJP Google Group. A lot of Hobbit owners have complained about the repetitive nature of making multiple Arkenstone attempts. I think this would be a good compromise as it would leave the original rule structure in place yet give players more options for earning runes towards their 2nd, 3rd, etc Arkenstone mode attempts.
I think having to repeat the same qualifiers every time to attempt an Arkenstone mode is one of the last big complaints about the game. Having to repeat all the same qualifiers for Arkenstone mode attempts isn't much fun as it becomes a grind
Here's an idea that would allow for the existing rule flow to stay intact yet give players more ways to qualify for Arkenstone mode attempts. Allow X number of modes completed after playing 1 Arkenstone mode (using regular rune requirements as they are today) to grant a rune towards 2nd, 3rd, etc Arkenstone mode attempts. Players can still play through Smaug MB, Beast Frenzy, etc again if they want to for their 2nd, 3rd, ert Arkenstone attemptd yet would have the choice and incentive to complete more modes instead. This concept would play well into the star raiting bonus system that Keith mentioned as well.
For example say you played 1 Arkenstone mode and now you are back to 0 runes. Instead of having to replay everything to earn runes you could either do that again or play 2 modes to earn a rune, play 2 more to earn another, etc. Then let's say it's your 3rd Arkenstone mode attempt, you can repeat the same things again as they are today or play 3 modes to earn a rune, 3 more to earn another, etc.