First off all, I really like the way Fusion 360 looks compared to other a lot of other CAD software. As a mac user with a retina display, I really appreciate the high resolution interface. It looks great, good job!
But there are still a few things that seem to have been overlooked which gives a bit of a sloppy impression. The settings icon in the bottom right is pixelated, even though the same icon left side panel is high resolution.


The timeline is also pixelated

As is the orientation box

There are a few other menu icons and such that are also low resolution.
I know this is nitpicking, but I believe it really matters. And I think you do as well, since you seem to have spent a lot of time making the interface so beautiful, so I thought I would point it out.
Thanks for a great product!