I've recently been playing a slew of old games, (Mainly Ace Combat), and a game that I TRULY want is something that brings back the feelings that those old games had. Today's games are nice and all, and have great graphics, music, stories, and all that, bu thtey just don't have that same feeling.
On the more specific side, I recently remembered one of my favroite moments of RF: Guerilla. I was playing and game across a large outpost in the badlands under attack by the marauders, and I was silently tipping the battle in favor of whichever side was losing. Eventually both sides were almost completely decimated, and I was able to swoop in and blow up the place with little opposition. So what I want is a RPG where you can do that- Silently tip the battle in the favor of one side or the other, from behind the lines, or full out blow up the side you want to lose. It would have fully destructible environments, RPG aspects (Classes, factions, decisions that affect the outcome of the war), FPS or TPS, and have VERY wide, expansive maps. An example of game-play would be that there is a major battle being fought, with one side assaulting a base surrounding a major strategic target, like a factory, dam, or power plant. You would sabotage the defenders by taking out guards with a sniper rifle, destroy guard towers with remote explosives, and take out their air support, while slowing down the attackers by blocking mountain passes or disabling their fuel supplies. Eventually, when the attackers have almost won, with both sides suffering excessive casualties (Thanks to you), you could sabotage the objective, by blowing the damn, destroying key parts of the factory, or destroying the supports on the bridge. Or you could just outright help the attackers, or the defenders.