Other people have brought up concerns with the idea presented here, but the one I'd add is the nature of people and things like the "raid" bonuses. I could absolutely see it becoming a Catch-22 very quickly, where if you didn't get the "Raid" gear that provides bonuses in Raids right away, groups would shut you out because not having that gear means (at least in our minds) that taking you would be a disadvantage compared to someone who has it. So, you need to do the raid to get the gear, but groups won't let you into the raid without said gear...

Fashion only carries the game so far. In DT alone there's only a handful of cosmetic items that looked interesting enough for me to get.
That's what's known as a personal opinion. Other people might find a lot of them "interesting enough" to get (or on the flipside, might not even like the handful that you do).