Quote: Well I would like to see this sensor in the 645z body not for resolution but for the conveniences that come with that sensor tech such as better shutter options.
Good point. I could use the rez, but we're getting close to a point where I might not need more.
Quote: I don’t need IBIS as I use a tripod almost always.
Again, a good point. IBIS is something I'd be willing to forgo. It's helpful on my FF camera for events shooting---even though the shutter speeds it helps with aren't optimum for events, but Collections Management frowns on flash in the galleries. With my Z, I'm more inclined to use a tripod for serious work, or flash if hand held. Also, a new , higher rez sensor will show defects of technique more, and I wonder how much benefit IBIS will give.
Quote: I could do with the newer lenses such as a refined mid zoom.
Your arguments for new lenses become stronger with this new sensor. I would still rather have it than not (perfect is the enemy of the good reasoning), but lens deficiencies will rob more goodness out of this sensor than the current one, probably. But maybe the net gain even with lesser lenses would still make the jump up worthwhile....
Quote: As for the 100mp Fuji. It’s now the same weight as the Pentax with a poorer grip and even more difficult to store in a bag because of it’s height.
Yes, they have certainly thrown smaller and lighter out the window with this one. But I always thought that argument a bit of a canard. The form factor seems to be aimed at pro FF DSLR shooters who haven't yet made the leap to a larger format. It looks awkward to me, but I have used battery grips and been ok with them.