As for GRO...played about 6 matches this afternoon, and honestly I would be all for it if not for the store. With my entry level character a sniper rifle would take 3 to 4 shots to kill someone, even if you are hitting them in the head? Hard to tell because the sights such on it.
As the class with the LMG I was getting an average of three kills per match, but snipers were taking me out with one shot in the body from out of range for my gun. Yes, this is where the store ruins it. These guys are buying the high end sniper rifles and they can one shot me from across the map.
So for three matches in a row I was finding that 5 of the 6 members of the other team were snipers, and all using the paid for rifles. You could not get near them, but sadly the game was to capture multiple points on the map, and they lost because they could not move anywhere without my LMG cutting them down.
So while they are deadly, they are easy to lock down. If they were smart enough to get a couple team members to buy the high end LMGs or something they probably would have stomped us. Anyways, much like 90% of the games I have downloaded in the last three months, here is another one to hit the delete button on.