If you knew before you clicked accept/decline, everyone would just decline until they got the easiest/shortest one (BP or Foundry as of now?). The idea is to extend some difficulty and variation into the daily, so you're not just doing the same one over and over again.
Battle of Ilum. With 2 stealth in the party, I've done it in 14 minutes. Even with no stealth, a geared part can easily do it in under 20.
I don't think that saying how many people are in the queue would be terribly informative, really. If long queues bother you, roll a healer or a tank.