Is there any type of online game for Playstation 3 that's maybe similar to Grand Theft Auto but has more subtlety to it.

Like, GTA4 is great, but you can't plan anything ahead of time and you lose all of your weapons every time you get killed.
Or if you park a car somewhere to block a guy's exit, by the time you drive around the block, it's disappeared.

I'd like to be able to move cars around and set up traps, go into buildings, climb up on stuff and do more stalking with the sniper rifle than just slamming cars into each other and shooting everybody as soon as they appear on the screen.