Thank you for enlightening me, my point is they've got it working already, can't see what requires working on it, and even if it's "buggy" or "unfinished", name a single feature in the EA that it's not.
I obviously know some stuff is still being worked on, but this specific one, is already done as it is working during sieges. The question really is why they don't want to enable it on the open field battles as well and let us test it since that's pretty much what we are at the minute: paying testers.