I got that impression at first as well, but the more I look at it, the more I get the feeling that it's just a question of familiarity and experience. As in, once you've gotten used to playing it, it'll cease to be an issue.
I think the hurdle to overcome is learning the class and what each ability does and which key it's bound to - once that's done, you can actually skip looking at the bottom half of your screen for the most part. You can just glance at it occasionally to check what's on CD, for how long, and how your health's like. The rest of the time will be free to look at the gameplay.