I think the problem is that we have so many Large Bright Nebulae visible from the Southern Sky,such as the Eta Carina nebula and M42 that a lot of people expect too much after seeing these objects.
Also Messier cataloged these object as not to confuse them with COMETS.
We do not get many very bright Comets so why to we expect Messier objects to be any different
Just think that you are seeing a remnant of a Supernova that was seen in the night sky in 1054 AD
and at 6300 light years away is in my opinion quite bright in a 16" scope on a clear night of good seeing.
So just enjoy the view and glean as much detail that many observations will bring you