You do realize programmers can't really know for sure what the content will be until they finish coding it... Peter Monelyx and others has tried doing what you ask and predict what they will deliver and gotten horrible burned by you for failing, so most companies has completely given up on visions and other future prediction stuff, as it's far too easy to get it wrong.
We just got the Barbarian update and hopefully another one is on it way, so the EA seem to be going fine and it seem like our feedback has created major changes, so the EA is a success for us.
I do think they might have run into a problem because they seem to have predicted the EA period would be shorter than it ended up being, but that is a future us problem, as I don't think we have run out of planned EA updates yet.
