If there is nothing prestige in the game it dilutes the experience for everything and for everyone. What incentive is there for anyone to resub at any specific time if they can just get everything later down the line? Would it even be worth getting since just literally anyone can get it… Why even play the game when new stuff comes out when you can never get anything truly unique?
Your idea of just letting anyone get anything at anytime, devalues everything ever done, or ever will be done. Take the feldrake tcg mount they gave everyone, when is the last time you saw anyone using it? Its value went to completely useless, and that will happen to literally anything everyone just has access to easily getting it.
Also Blizzard advertised those things as never returning, bringing back the aotc mount is also a huge mistake. They should have altered it in some way like they did the astral cloud serpent for mop remix. Same with mt Druid form, the most they should do is offer a new different color that differentiates from the originals, so people get the form and the value of the originals remain.
They just need to make it so expansions routinely offer newer and cooler challenges and rewards, don’t just hand everyone out the old stuff.
It sucks to miss out on stuff, but it is actually a benefit to know down the line you can earn things that truly matter and are unique. Look how much people care about these 10 year old things, you can end up with things just like this down the line, and know that they’ll preserve that. That is a lot better than getting a quick satisfaction, and destroying any chance at believing blizzard when they say this will never come back.
You already see how awesome it is to earn those cool unique things by how desperate people are to get them, and they are desperate because they can’t get them. It would be a massive mistake to reintroduce the originals in any way.
Hope new cool things get introduced that you can earn going forward, stop trying to advocate robbing people that rightfully got it when it was current.