Well, maybe not a giant. More like really small. But really important!
Have you noticed the "trend" (I am calling it this because I have read a few books like this lately) of modern authors to "forget" to use quotation marks? I have. And I am saddened by it. Those little quotes help guide me along. They tell me, "Wake up! Someone may say something important here." Alternately, they tell me when one character stops talking and another picks up the conversation. They also decorate pages of dialogue quite nicely (look at all the pretty commas! It's like they are hanging themselves!).
Why the infatuation with disregarding such an important literary piece of the puzzle? I say bring them back and keep them FOREVER!