+1. Seems silly. I use FSFO and by time ask for boarding myself, co-pilot and crew are already in plane and have pretyy much prepped the coackpit. Just needs to be the passnegers. This is a no brainer to have an option. I did do a Twin Otter flight to St Marys and must admit that was good to have everyone get on with the passngers and then I commenced start up procedures though 4 crew was a bit overboard in the Twin!!.