Missing what, you haven't played RO2 yet.They're gonna say 'ah....so THIS is what I've been missing.' Those people are out there. Take it from me, I was one.
Fans of MW2, BF2, or Arma2 aren't expecting to go back to Ostfront, they've already played games with destructible environments, smooth animation, contemporary visuals, rank-up systems, multiple game modes, squad commands, or global stat tracking, and the new FPS releases coming out are just going to continue the process.
So fans of the contempary shooters will find a lot about RO2 familiar already. It's the new game feature like the MP campaign mode where RO2 looks to be most innovative for an FPS title, and no one outside of TWI's operatives have played this yet, so cut the "I know what people are missing" BS, because you're as green to any new RO2 gameplay as any other FPS fan will be.