RO2 still has its issues, quirks, and problems... but that's because Tripwire sought to be innovative and revolutionary instead of recycling the same game over and over again *cough*. There were many, many new features in RO2, many ambitious changes, many original ideas.
Checking ammunition, setting weapon sights, switching from the scope to iron sights, three separate reload animations for the G41, fully modeled interiors of tanks, first-person cover system, suppression...
That's a much longer list than 'prone' and 'new weapons'.
Red Orchestra 2 still needs work... but in my opinion it deserves the award for having the balls to take great risks, even if not all of them paid off. :IS2: