It's important to get well-rounded right off the bat. A lot of experienced dancers can get pigeonholed into one thing. I've been hired for a lot of different gigs simply because I can do a lot of different things with different levels of dancers. And it's sad to me that some dancers don't do more.
At the end of the day, you have to make sure you're at least listening to what your head is telling you, what your heart is telling you. That's hard to do when there are a million other people shouting as loud as they can.