Earlier quoted context omitted.
It's what people asked for – a work horse, designed to be fast, reliable and reasonably quiet. They've tried the "beauty first" approach on the 2013 version and it was a disaster.
They can accomplish all that, just without the tasteless design. The stainless steel frame contrasts with the shell, and not in a good way. The ventilation holes are really weirdly proportioned and still manage to look cramped with that inner baffle. And finally, that apple logo on the side stands out a bit too much, on the old cheesegrater it was a darker gray and a bit smaller. The old G5 chassis was an understated…
However, design is always about compromises. The G5 had more beautiful handles, but they had sharp edges and weren't nearly as ergonomical as the new ones. And I wouldn't be surprised if the weird holes in the new Mac Pro allow for twice the airflow. Both are tradeoffs that I, personally, welcome.