The grappling hooks and the ziplines reminded me of BF2: Special forces (as well as some really oldskool Quake 1 mods). Maybe when they get the weird shit out of their system, they'll make a futuristic game next... That's what happened after BF2:SF IIRC with 2142 (too lazy to check).
It's something that sounds and looks cool, but the value added to gameplay isn't much. Was interesting though, to play around with something different, for a time.