idea dump

mass effect 3: we want some money

basically it's a new mode for multiplayer
it's
basically the same
but you know
you play as
CERBERUS

tim gives you missions
you start as an assault trooper, but can unlock guardians, combat engineers, phantoms, nemesii, centurions and anything else i forgot
one of the d-pad power-ups
instead of missile launchers
drops an atlas

the enemy types would be
collectors
mercenaries
geth
alliance

alliance would be like
all the characters you can play as in regular multiplayer

it could be mass effect 2 all over again