Hell no to this.
A flashpoint is an extended period of time where I'm going to be interacting with other people and I'm stuck with them for the full duration of that event. I for damn sure don't want a bunch of idiots tossed together randomly without having even said a single word to each other first. It reduced WoW dungeons to just watching a bunch of DPSers running forward as fast as they can and bashing their head against a wall until finally it gave way. When they tried to put even the tiniest thing bearing a faint resemblance to challenge into the game, people screamed bloody murder because they had gotten used to just running forward pressing 1 or 2 buttons.
You know that you wouldn't be forced to use it, right?