I would only opt for these seats if you can't afford to sit anywhere else. I sat here for a playoff game against the Heat, two seasons ago. It was a cool experience to finally see an NBA playoff game in Dallas but I would have obviously rather sat on the bottom level. The court and players looked really small down below but the crowd atmosphere was amazing!
For weeknight games, this section will likely be half full with fans scattered here and there. For weekend games vs. a team like the Lakers, you will have to sit where your actual seats are.