I agree. The new player message doesn't mean anything. I had a FC member yesterday who got Melusine to 1% and then they wiped. A couple more seconds or some more lucky procs and they could've done it. How is that not the same as kill exp? And on the other hand, not having a message doesn't mean you know how to kill it, you might have died halfway throught but the party still defeated the boss and you got your clear with exp only up until 50%.

The bonus is nice but it creates much more hostility than incentive to allow new players to join in.