Lesser coins are easy to get, all you need to do is Isle of Thunder daily quests twice a week. That's like 30 minutes a week AND you make gold. I fail to see how it was an issue before.
You could argue that the experience boost would be ok, but with the amount of heirloom gear there is, it's not exactly the issue. The real issue involving EXP comes with the fact that heirloom gear, though bound to your Battle.net account, cannot be transferred cross realm.
I can see this experience boost thing being a answer to fact I can't send my heirloom gear to a different server, but that's not really a solution. Why can't they just make it transferable? Either this is flat out greed or massive oversight.
Edit: Before people start shouting end of the world, keep in mind that all of these things, aside from not even existing in the game yet, are optional.