The randomness issue that is detrimental is that sometimes people will go twice in a row. Since pc's run across many more enemies and will go through many more rolls they are much more likely for this to happen to them in a bad way. Hence the extra randomness is bad for them. Same with most random aspects in the game.
Perhaps someone will explain it better, but that is at least one instance where it is very bad for the pc's. Single troll in cyclic? bad, but there can be worse. Single troll who gets two full rounds in a row of attacking? might just kill a pc or two during that time. Bad.
Perhaps someone will explain it better, but that is at least one instance where it is very bad for the pc's. Single troll in cyclic? bad, but there can be worse. Single troll who gets two full rounds in a row of attacking? might just kill a pc or two during that time. Bad.