There has been talk about scoring being unfair due to the possibility of stalling. Here is an idea to modify the current results.
Final Score = Score + Modifier
...where Score is as defined in the rulebook
Modifier = (R - 5 + P - L) x 10
...where R is number of rounds played, P is number of players, L is difficulty level of the scenario
in theory you can solve the mirkwood and the adnuin in two rounds because they have a third stage with zero need progress.