Ghost Recon is the best game ever.
Two official expansions demonstrated the solidity oif its concept.
The modding community has proven many times the strenght of its engine.
Unsurpassed, even by its latest incarnations, Ghost Recon is built around the most difficult issue of any mission profile: time. This is a game about patience.
Special Forces soldiers aren't cowboys.
Any player that will charge the enemy like in any other FPS he'll be welcome by a hail of bullets: each one deadly. Like in the real life, you have no energy slide. One shot and you're dead. Massion Failed. Big time. As in real life, when bad guys around are heavily armed you don't run: you crawl.
By the same extent, using the Ghost Recon you'll learn how to use the terrain coverage to approach (most of the time, in painly slow fashion) the enemy position, set up a sniper/observer team to provide cover, crawl the rest of the team to the proper attack position and wait until the target is "painted". Only then, you can eliminate the enemy. Slowly revert to your "assembly area" and await exfiltration (under cover, of course). Mission Complete
That's it. hundred minutes of wait for a five-seconds opportunity.
That's undoubtedly satisfaction. You'll love this game.