Why is that bad? The items are the final result/reward for completing content for when they were relevant. Even if they can be out-geared like Brawlers', or trivialized like some other content, there's an additional incentive in that one had to be an active subscriber during a specific expansion to be able to get it. The underlying message from Blizzard is: stay on board, or miss out on stuff.
Why is it important that anyone can go get the limited/removed/unattainable stuff again? I'm never going to get some of the items in this expansion, and then they'll be gone from the game. Why should everything be open to everyone? That's the attitude that gets everything watered down until everyone can have everything and go home with a sticker and medal.
The best way of doing things is do like they did with previous expansions and make most of the things (outside of the realm first mounts and stuff) a 0.1% droprate or however low it is, atleast then people can still get them, it'll just take a lot of effort.
I've played WoW since the very end of vanilla/very beginning of Burning Crusade and there's been a lot of content I've been there for, and some that I've missed for various reasons and when I realise there's stuff that I've been there to get, but missed out on for a variety of reasons out of my control it somewhat annoys me that they're gone for good, although maybe that's just me.
In other news, the guild I'm in as a social rank after knowing people who moved there when my old guild disbanded have just asked me if I'm interesting in raiding again, but it'd mean I'd have to play balance and I've always been a healer, atleast since mid burning crusade and I've no idea if I want to do it or not.
I used to play Mage as my main to start with and I eventually got bored of DPS so I made my resto druid and outside of levelling in Pandaria and a very small amount of raiding at the end of cataclysm I've always been a healer, it's all I know anymore and in a way it's all I want to know. I really want to raid properly again and I know in a top guild like this who already have some of the best healers in the server I doubt I'd even get in as a healer after the break I had and this is a huge oppurtunity.
gaaaah why does this game do this to me all the time. I have no idea what to do >_<