Everything looks flat. Where is the shading and light source? Where is the border? Looks like the cover of a 3rd graders crayon coloring book. Very unprofessional and childish with many cartoon characters and comic book looking icons. Is Microsoft serious about delivering product to the business world? Maybe Windows 10 means its for 10 year olds.
What is it with people and fears that their operating system doesn't look manly enough?
Also, what is it with people and the idea that late-90's pseudo 3D is adult and professional?