I understand what you're saying. Clients don't like to wait. I remember an influential banker we used to fly regularly who was known for climbing into the airplane and simply saying "go fast." That's what we did.
I worked for a Learjet operator who insisted that we be taxiing as soon as the engines were started, and that's actually a very common thing; usually the engines were being started as the clients were settling into their seats. Clearances already obtained, all necessary checklists up to that point performed, coffee and ice ready, newspapers laid out on the seats, clients expected a turnkey operation: show up and go. Fast.
I flew Piaggios for a thousand hours or so, and the same thing there. Not at all uncommon to leave the right engine running when dropping or picking up a passenger, circumstances depending. I flew ambulance in King Air's, Lears, and Senecas, and we did the same thing. Much of the time I had engines turning as the crew arrived to get into the airplane and we were moving as the door was closing. There was never a delay with patients at the airplane; everything was always ready. When I got a dispatch, the airplane was already preflighted, and during my drive to the hangar I briefed and filed over the phone. My preflights were often long, as was my preparation, but I did it at my leisure before a flight was necessary, always at the start of a shift, and as the day or night progressed. Even in those states, however, I did the full checklists and did them out loud, as a single pilot (it kept me honest in not skipping things, and it put the record of having done so on the cockpit voice recorder).
SNS3Guppy
The above that you have so well described and I am not so good at conveying is the reality for many of us. Guppy you should write a book
Pace