Sir some cheese with all this whine?

Sorry you are both wrong and overeacting, they have game two free retcons already, didn't take them back and promised they will give more free retcons when they do any more ground breaking changes.

Moreover if you really feel you need to know in advance everything, go to PTS skip tutorial go to the levelling agent raise your toon to lvl 40 and test your self out in powerhouse, oh do some bug hunting while you are there if you can.

solutions are there, people just want to complain.