Regardless this will be something to look out for.
But an MMOPG... Doesn't need to be an RPG in the traditional sense of it.
In all likelyhood I see it being on a grander scale. We've all seen how DoW and Mark of Chaos work. In my own speculation I see it as entire Armies being under our control. Bigger, Better, so on and so forth as you progress. Hell I'd love to start a Space Marine chapter .
And Pride never assume like that.. We don't have any hard evidence of what it's going to be. Give it time and patience, my friend.