I don't think the facade of the new Bernabeu looks that bad in terms of its execution. Where it looks bad is on design aesthetic for me, and the fact that they put out renders knowing that they had nothing to do with the reality.
The roof is amazing. That's the part where Bernabeu got it spot on. Metal structures can allow you to push the roof up. With cables, the most you can do is slightly downwards. That's how steel cables work. They can support a structure by way of uniformly applied tension, but they can't elevate them. So the roof on Camp Nou will be slightly downwards, sunk in compared to the last 10-15 rows of the third tier.