Account Wide TCG Vanity Items

So, I'll try to keep this short and to the point, why are TCG items character specific? I'm specifically referring to vanity items as the title suggests as obviously mounts and pets are account wide now, however why are vanity items not?

I know in terms of difficulty to implement it might be challenging changing years old items to Bind on Account, I'm no programmer nor will I try to talk about how it's an easy fix blah blah blah, but what I'm asking is why was this never addressed? The reason I find this to be strange is so, Blizzard has their own vanity item, the Murloc costume. The Murloc costume is a BoA item, a vanity item that Blizzard itself implemented from Blizzcon, so why is it that the Blizzcon item a BoA yet TCG items aren't?

TCG items are in and of themselves a luxury and I totally understand that, however if TCG items are such a luxury then why would you allow your own vanity item to be BoA?? Just something I was pondering over while staring at every single TCG tabard(that are now 200+on ebay due to it being UDE points redemption and them being obsolete)on my rogue that I haven't touched competitively since Ulduar, or having to buy a second Epic Purple Shirt and Pedestal on my DK because I no longer play my paladin.

I appreciate the game, and have loved playing it since the beginning, I love this game, and appreciate it much more after trying other MMO's(let's just say The Old Republic made me love this game), I've been with you guys since the beginning and in no way is this something that's going to make me quit or will I threaten that in some rage fueled rant

I was just wondering if there's ever a hope that we might see that, because it almost seems a bit uneven thinking to me that murloc costume would be BoA however TCG items wouldn't be. It's 2 seperate entities and there's the obvious "buying 2 pedestals is more than buying one so more profit"however the money that people spend is usually going to the person who broke the boxes not Cryptozoic, which still means more boxes broken to get said item thus more profit in their pockets, thus we keep it BoP, however I just think that when you get that rare item it should belong to the account not to the specific character. Sure Cryptozoic might lose a 10th of what they make selling booster boxes, however that won't stop people from buying massive amounts still to get the items to sell, it won't deflate those item values as much as people think, it will still be a thriving market, seeing as we have roughly 10 million or more accounts that probably will get activated at one point or another and one will say "Gee, I think my level 1 would look hot in an Epic Purple Shirt."

Or even the UDE items? I mean it would look really good on you guys to make those items BoA seeing as UDE really slapped not only Blizzard but the fans in the face by just completely disregarding the points system and severing business ties. I don't necessarily want to get into it, seeing as it was probably a very frustrating situation, but giving back to the fans on your end by making those items BoA would really show your support by getting behind us on an already infuriating issue(UDE making points obsolete not Vanity items being BoA in general)

So my short and concise post turned into a TL;DR, but I just would like to see something like this in the future.