ED has my 120,- € as well and I am very pleased that they listen to "me" and finally add an arena mode (hopefully). It is the wisest decision they could make at this point from a business standpoint too. Besides: E3 hasn't even begone. Maybe we are all wrong or they have some for the explorers up their sleeves too. It is a little bit early to get too emotional, IMO.
As I implied, I do not have a problem with an arena mode per se, if indeed this is what the announcement is going to be. Frankly, if there IS going to be (limited time) xbone exclusive content, then something I have no interest in can be exclusive for a long time as far as I am concerned. I understand, and accept the business case: FD have probably already got a high penetration into their old (in at least two senses of the word) target customer, so targeting a different customer makes economic sense. But it will annoy customers who signed up and have yet to see what they thought they were promised be delivered, whilst those new customers continue to get lots of new stuff.
It is certainly not too early to get emotional.