The Black and Plagued Proto-Drake, Corrupted Ashbringer, Old Zul'Gurub mounts, Atiesh... now they remove the challenge mode gear, mounts and, to a certain lesser extend, the title? They said themselves that they hate removing things from the game, they even said that they regretted removing the Naxx meta mounts, but it seems like they don't even listen to themselves.
They should make all this stuff reavailable but as a very insanely extreme rare drop from somewhere. Either from a bag you get at the end of every dungeons or raid or perhaps even as a near-nonexistent drop from those card packs you get in Hearthstone in the form of loot cards, but hey thats just an idea.
I was thinking about coming back to this game but this is just turning me off, why should I play this game when that kind of thing will just happen again and again? I mean I'm not playing this game just to see people with these kind of thing in a "you can't have that anymore I have it you don't trollolol" stance. It pissed me off so much when I was only an achivement away from getting the Black Proto-drake, my favorite mount, back when the new version of Naxx came out.
I'm willing to pay a couple of hundred bucks to get that thing if Blizzard is reading this, I'm serious.