Heya,
Really, the whole endorsement thing is getting old, but it's here for the long haul, and we're going to suffer it.
That said, I wouldn't care about the endorsement thing if they were using quality headphones from the ground up, and not just producing plastic toys that go boom-boom.
The moment I saw the Tiesto release, I thought "Hah, more garbage" until I saw that it was being done by AKG. Think about that. No one out there will probably recommend an AKG headphone to someone who listens to a ton of bassy dance music, right? Yet, here, we have one of the world's biggest electronic DJ's that most people who listen to this kind of stuff know of, putting his name on a headphone by AKG. Kind of has a weird yin & yang thing going on, as I would never expect an AKG headphone to be good for this. But to my pleasant surprise, I'm excited that AKG is putting their work into a headphone that is fun and doesn't look like trashy hiphop jewelry.
So maybe the future is bright and some of the later endorsements will be by "who cares" but on some well made headphones, so the result will be some great looking headphones that actually sound great too.
Very best,