Well, as the title said, MGS4 is, potentially, not the last MGS. It's just the last MGS with Solid Snake. Link to article below. In the article, as always, there are more links.
http://www.gametrailers.com/viewnews.php?id=5954
I don't know... I liked MGS2, and I liked Raiden, because he's a bit more human the Snake, who always seemed to be, while awesome in many ways, a bit more then human. He seemed just too good at what he did, even with his capture in MGS. Part of what made MGS2 great, however, is how Snake was helping Raiden out, and teaching him little things. If Snake is gone, then who know's if it would be as good... I'd still give it a chance, though.
http://www.gametrailers.com/viewnews.php?id=5954
I don't know... I liked MGS2, and I liked Raiden, because he's a bit more human the Snake, who always seemed to be, while awesome in many ways, a bit more then human. He seemed just too good at what he did, even with his capture in MGS. Part of what made MGS2 great, however, is how Snake was helping Raiden out, and teaching him little things. If Snake is gone, then who know's if it would be as good... I'd still give it a chance, though.