You have to hand it to Kojima for the ballsiest move this medium has ever seen. To pull such a bait and switch on everyone, with one of the most highly anticipated titles of all time, was a potentially career-ending move and yet Kojima still makes games and to this day we talk about and analyze MGS2.
Pros: Superb cast of characters, incredible production values, excellent, highly ambitious and bizarrely prophetic/interpretive story walks a fine line but rarely steps into the ridiculous territory, awesome boss fights, fantastic visuals, excellent level design and gameplay hold up to this day, superb voice acting, great music, the little things that mean a difference, codec conversations, tanker level is one of the medium's best, troll level = Kojima
Cons: Raiden shows a baffling amount of ignorance during his opening hours, slightly problematic controls, the inclusion of the tranquilizer gun made stealth a lot easier and less tactical compared to the original, a few plot holes