Quoted from Vyzer2:I enabled mine and like it better. You can earn more points...and the keep shooting light stays on as you drain balls till cave troll is beaten and than fellowship mb begins...
I keep mine on too. I guess the Balrog intro is a bit less 'forward' after the growling of all the troll jackpots. And I find it's surprisingly hard to keep shots flowing on the short timer to defeat the troll.