do blizzard forget were paying a subscription?

first things first, i love the game to bits and i will continue to pay for it, however this is a subscription based game and i normally expect to get the fullest out of a game for my subscription, nothing hidden. cross realm dungoen finder?!?! this is a fairly bulky thing thats going to be implemented as ANOTHER subscription. proberly upwards of £10 aswell knowing blizzard. Realm changes are £15, faction £20. I honestly do not think services such as these should be so expensive to the consumer, this money alone can proberly pay for their development costs of patching the game, where is our sub going too...? its like like £10 a month to play a game is cheap either! Do other people agree with me here when i say this is just one step too far.