We have some doubts. If we make Across Live as a Third Person Shooter, will have acrobatic movements, but will be difficult to control and really annoying in some moments. In the other hand, if we make a First Person Shooter, We can make a unique experience of gaming, and really cool stuff, with out all that acrobatic (useless) stuff. Is less visual, but the best in game experience.
So you choose ;) If you want to vote, You can do it here: