If cost of camera/media/ergonomics is not important to you and you are strictly making full length narratives then none of these prosumer cameras are going to be good enough for you, especially if your film is for theatre distribution.
I agree too, that's why I included "at a minimum." in my post.
I work in a downtown area with all the shiny high-rise buildings and stuff. This makes me lucky enough to see commercials, spots and whatever else professionally shot on the sidewalks every now and then. I am constantly amazed at what they bring in to shoot a 30 second spot. Basically a huge 10-wheeler box truck, support vehicles, tow behind generator, etc.
In every case, they were shooting with a Panasonic camera. I couldn't identify exactly which one, but they appeared to be one of the HPXs, maybe even a HPX 500 once.
I do have to say, with the massive light manipulation they do through 4'X4' shade filters to block direct sun over the talent, and multiple $14K+ Arri lights for fill light set up, you could easily get a good shot on the HMC-150. And there is a group of people watching on a remote monitor to see if they approve of the shot.
Bottom line, this stuff is expensive.