I have played a mage as my main raiding character since Karazhan, and it is quite safe to say that since then mages have changed very little and received very few changes to their gameplay in the last two expansions. Yes there has been some modifications but nothing comparable to for example Methamorphosis or equivalent. But hey, we are still here and I personally enjoy changes made that enrich the game whether they benefit me directly or not.
So now that after such a long time, mages are finally being given tools that make them seem a hell of a lot more fun then they have for a long while, I have to admit that although I am swapping mains to a priest (dps'ing for two expansions is enough) I embrace these potential changes, am very happy for those who will play it as a main and will personally thoroughly look forward to playing my mage in alt raids..
Clearly such feelings are beyond you my good sir.
Now from the strength of your reactions, while we are still not even sure of what will or not make the expansion, I can only think of two options:
1. You are a very poorly skilled shaman scratching your head wondering how the hell you are going to get a raid spot now that another class can bring bloodlust. (bring the player not the class woop woop)
2. To put it as politely as possible you are a narrow minded troll who struggles to see the bigger picture and how changes to other class's will make theirs and your experience a much fuller one.
All in all, your kind of reaction just makes all these potential changes just that little bit sweeter.