[dont_be_mean]

Irrespective of specific CS areas people will list here, a more important question might be: why do you ask?

And why are you after leverage? Is it because you want to make a lot of money? That's not the only factor to consider.

Individual inclinations tend to be strong enough to pull you to specific directions. Which areas will be exciting? The ones that excite you! Be as proactive about finding what excites you as you are about worrying about the next 5-10 years.