Picture yourself in multiplayer game with 4 of your friends.
You start out in a city thats basicly your main hub(until maybe later in the story you come to a different city or w/e). The whole game is litterally about you and 0-4 other friends(can be controlled by AI) doing wow 5-man instance like dungeons(could shift to more open areas sometimes, but more the feeling of it).
I'm talking a bit more holy trinity focused stretegic gameplay then for example a game like d3, but still more action packed then a game like BG2.
The combat could be something like DA1 or 2 without the pause button.
This game would be build around a long and interesting story in a multiplayer setting, and not focussing on a single player campaign.
I know a lot of people say that LAN and nom mmo multiplayer games are dying, but i could really see myself loosing a LOT of hours on a game like this. Especially if you where able to tune the difficulty to your taste and it maybe then brought better rewards(sorta like d3?).
Ofcourse we are talking an exceedingly vast leveling system with maybe both stat points and talent points, plus the whole loot shebang.
If there is allready a game out there like this(thats reasonably new) please point me to it.
I think the closest i've come to this so far are the older Dungeon siege games, but they where still more like hack and slash then strategic-action combat.
Edit:
obvoiously it comes close to the 5-man dungeon experience from wow, where the combat was a bit more like DA. And not as easy as we know it today.
Edit 2:
A person pointed out to me that everyone might not know the games i'm talking about, so a brief explanation:
d3 = Diablo 3. I'm pretty sure everyone on this forum knows that its about
BG2 = Baldurs Gate 2. Its one of a few really hardcore Dungeons & Dragons games using dice rolls and modifiers to predict the outcome of a battle. Its a fairly old game but considdered classic by many. It has very tactical combat that also allows the player to pause an issue orders in combat.
DA 1 or 2 = Dragon Age 1 or 2. These are fairly new games. They focus around a linier story with sidemissions and have a very active combat system that still has a lot of tactical features to me.