Guild Wars 2

/points at circus weapons in Ember Bay

You presume that a cosmetic item will appeal to everyone with gold to burn. And that leads to the problem that if it does then it will also appeal to those with lesser wallets who will then be very unhappy they can’t get it. see Invisible Feet.

No. This game was designed, marketed, and sold as one where you don’t have to pay to play or to see all the content. What you suggest goes against its core philosophy. The gem store is for fluff and convenience, not for content, and changing that would likely gut their player base far more than they’d gain in content sales.

edit: Yes, I’d pay for an expansion. But not nickel and dimed in.