Talking about GH3/4 little improvements: Headphone in and Hd out move little to front of camera to get more Lcd movement. All rest is OK and should be keep the same for future accesories compatibility. XLR in battery grip. Better AF and I will be very happy unless price increase again for same reason and please don't implement 8K yet :)

I mostly like the ergonomics of the GH3/4 body. There are some fiddly parts that I don't like or would change.

The spin dial on the back is difficult to use. The right portion of the dial is a bit too recessed, but even if it were not, the "spin" function isn't very functional for me. Maybe it's just that my hands are large. I actually prefer the 4-button design of the GH2 for this control.

It would be nice if Panasonic could bring back the push-button dial design for both the thumb wheel and finger wheel. I thought that function worked pretty well.

It would be nice to make the thumb resting area slightly larger. Maybe it's an issue only because my hands are large.

The camera needs to take both photos and video.

@HillTop1 +1 A "GHvideo" with built in NDs, a servo zoom and a form factor like the C300 would rock!

Built in ND!

Something like the Fujinon nd p01 would awesome, but even regular built in nd's would be really nice.

With all due respect, before even considering buying whatever next GH body it would be "nice to see" some caring (in the form of firmware updates - improvements - bug ironing) of the current line of bodies and lenses. It's by no means utopic, see Fuji example. I very well may be paranoid but regarding this neverending back and forth feedback I fail to grasp a REAL difference from programmed obsolescence and a refined (interactive) way of endorsing future products strategies =)

I hear what VK is saying. However, Panasonic delivered some very impressive new functionality in terms of their stills from video mode. It was mainly geared towards stills shooters but it gave us different aspect ratios for 4K video which no other camera offers.

Panasonic is listening. However, they won’t make money if we stop buying new cameras. If all they ever do is update the old one and not create new cameras then they won’t last long as a camera business.

Right now I do not intend to buy another camera after I get my LX100. However, if the GH5 had everything I listed above I would be tempted to buy it even though the GH4 does virtually everything I want it to do.

I understand that we shouldn’t do their jobs for them for free. However, it is also up to us to try to capitalize on the advice we give them. If I can make enough money off of review videos and get them to make updates via firmware then I don’t see a problem with it.

The new stills from video mode was GIGANTIC for my style of shooting. I know it doesn’t apply to everyone but it was definitely a really big deal for everyone who uses the camera as a hybrid shooter.

The body ergonomics are really great, but as others have said moving the input/output jacks into a position that allow the screen to continue to articulate would be preferable.

I'm also not a fan of the recessed display toggle button on the palm area of the grip, that could move elsewhere.

The video record button is also a bit awkward and would be better served by either a taller protrusion or more tactile feedback.

The battery grip would be improved if the tripod screw was in line with the lens mount. They could make the bottom portion of the grip thicker to accommodate the depth of a tripod screw.

The new GH5 should use this tech (Micro Color Splitter) http://petapixel.com/2013/03/28/new-panasonic-sensor-tech-significantly-improves-low-light-performance/ and (Organic Sensor) http://petapixel.com/2013/06/11/fuji-and-panasonics-new-organic-sensor-boasts-insane-14-6-stops-dynamic-range/

It should be really modular, the new YAGH should transform the GH5 in a C300 form factor.

It could have a S35 sized sensor, when with M43 lenses the camera would automatically crop the sensor to the M43 size, and that should be also a option with other lenses.

I would try the original card for a GH5 (and I like the GHV-ideo Idea) Let's be honest, even if the GH series delivered good photos, most people used it for video.

I wouldn't mind at all that they try to separate a bit themselves from the "Photo" look and embrace a bit more the "Camera" look much like Canon has done with their C100-C500 series.

As long they don't take the futuristic fancy and impracticable path black magic has taken with their 2.5 and 4K camera I say it's fine.

Trying to recycle the AF-100 could also be a good idea.

I think they should make a grip accessory (along the lines of Sony's FS7), that is optimized for video. That way, the camera body can keep its great stills-oriented design, and the grip accessory could add video-oriented controls.

(Dials for iris/ISO/shutter angle, fn buttons for focus peaking, zebras, punch AF. Maybe even a zoom rocker if such a lens is built, or an additional electronic follow focus for the current AF lenses.)

The GH4 is not entirely ergonomic for video, but it is for stills. I'd hate for it to get optimized for video, only to loose its stills orientation. It's nice having "2-in-1", one great camera for both, rather than an AF400 and GH4 as separate cameras. Other than internal ND, and maybe global shutter, the GH4 has everything it needs to be a stellar video camera.

Screw HDMI. Or, at least add an SDI.

I'm nearly over trying to get DSLR suited for video without a tinkertoy system of doodads attached to it... by the time one adds a 7Q, and a cage, and a follow-focus system, and a YAG, and a preamp, and an external battery - gah. Drop the frankenrig and get a real video camera.

I'd like to see a sensor with good low light performance and colour setup presets that are independent from the C1 C2 C3 settings presets. Also a proper log gamma and matching LUT for post production.