Okie, skipping most of this and just answering Canid's questions,...
Firstly, heat. Unless you're outdoors in direct sunlight on a day with temperatures in the high-30's (Celsius,.... for those of you in the one country that hasn't gone metric,...) the odds of you overheating a Pentax body are negligible.
I've reported in other threads, the one time I saw the temp warning symbol on my original K-01, was in direct sunlight and the temp had hit 41 degrees.
In most uses, you will never overheat a Pentax body.
I've recorded for 4 hours, hitting the button again every 19 minutes, without issue.
Now, as to which Pentax camera to upgrade to?
KP.
Most recent APS-c sensor (Close to super35 sized), and the data rate of the CoDec was taken from 19mbits/second to 24. So it's the most amount of information recorded in the image in any Pentax body.
If I was spending my own money on a Pentax for general use, that's the keeper, especially if needing to record video at night.
If you shoot 95% stills and 5% video, get a K-1ii (we all would anyway,..)
If you shoot 5% stills and 95% video, and don't need 4K, the KP is acceptable.
If you need 4K and want to keep the manual Pentax lenses - GX85, G85, GH4, GH5.
Don't bother with the Sony's unless you can afford a gimbal, the IBIS (Including Sensor Shift!) in the Panasonic's blow everything else away for 4K, but the colour science in stills is waaaay behind Pentax.
I looked very closely at the G85 to replace my K-01's, as I have an external recorder, so don't need the high data rate CoDec's in the GH bodies.
The GH's also use a version of the DLi-90 battery, so if your K-7 uses that, you can keep using the battery.
This is where my Pentax Primes live now.
CION - Science of the Beautiful - Products - AJA Video Systems
Last edited by PiDicus Rex; 04-17-2018 at 06:41 AM.