A37575,
I hear you loud and clear!
Sometimes I sit in the seat, squirming with embarrassment, feeling de-sexed and futile, while some poor 21 year old girl tries to deal with a pax issue that could be resolved ever so quickly with me putting on my hat and walking down into the cabin!
Our company regs are very clear about this - we are simply not allowed to get involved.
While the aircraft is on the ground and the doors are open, well, that's a different issue altogether.