I think the concept was nice, but I never got into the first game. The second one had a demo which I tried, which was very linear. And the bullet cam was very annoying. To top it off, the ballistics were very wrong and I do not like 3rd person shooters too much.
I know this is not as popular as mowing down a bunch of guys in a corridor map, but I would like a more realistic sniper game. Start off from a choice of starting locations like SWAT/old R6, and move into a position to shoot your target. Open map, enemy patrols, ect. If there are guards you would have to avoid them or take them out silently before killing your target. Then you must extract to an area on the map to complete the mission. I would be interested in a sniper game like that.