i want to see the characters from the first one of course, only perhaps you don't just play as one of them...
no!
you get to roam pandora with ai partners (who get replaced with people in co-op) who are the people from the first game, you have full control of their loadouts, and equipment. there are 4 new fortune hunters on pandora, you assume the role of one of them. they have different classes than the characters of the first game, so they could be specialist (soldier-type character), scout (hunter-type character), support (berserker-type character) and telepath (siren-type character), maybe? they'd all have different special abilities than the previous characters, and each would even use a different grenade type, maybe? anyway, the story could be: so you heard the vault was opened, and decided to go check out pandora. you meet a team of fortune hunters claiming to have been the ones who opened the vault and unleashed hell upon pandora but quickly defeated the demon that sprang from the vault. now they are hunted by the crimson lance with massive bounties on their heads, so now deadly mercenaries and raiders are looking for them, too. you volunteer to aid them in their journey. the main objective is to clear your name, defeat the enemies on your trail, and get off pandora. but most importantly, hoard a big stash of guns, kick ass and have fun. that's my idea.