The public doesn't ever know what it wants. And when it does, a lot of times what it wants isn't good for it.
A famous anecdote about the ancient Greek artist Polykleitos says it all.
After having devised his canon of proportions for the ideal human figure, he created a sculpture in which to illustrate his "perfect" system. In order to prove the supremacy of his system, he asked the public to give him a list of things they wanted to see in their "ideal" sculpture, and then made a sculpture in which he included every one of their demands. He then revealed both sculptures together. The public adored one of them, and laughed at the other. Satisfied with this reaction, Polykleitos addressed the crowds and said, "ah, but the one you laugh at is the one that you have made, but the one you adore, I have made." Or something like that--I paraphrase.
Anyway, the moral of the story is that people don't know shit. Artists have to make their own choices and follow their own ideas. Sometimes it's great, sometimes it sucks donkey balls.
That said, Telltale had better include hard puzzles, large explorable areas, and deaths in their KQ game, or so help me I'll...