First, to say Design is sport is stupid beyond comprehension, second, implementation and optimisation are not design. Decorate your apps and be happy, but please stop with this nonsense. Every design project has a starting concept, initial design idea generated from one person - the designer.
One. Not team.
>> First, to say Design is sport is stupid beyond comprehension
Agree to disagree (without calling it stupid beyond comprehension). Design is so much more than final UI. It's the whole experience, how it works and how it's distributed. And that involves a lot of stakeholders, not just one designer.
So why buy Herman Miller design, or Ive design. Implementation can include lot of stakeholders, and again this is not sport in any meaning. Definition of sport: An activity involving physical exertion and skill that is governed by a set of rules or customs and often undertaken competitively.