I am interested in seeing side-by-side tests with the cameras main hybrid, mirrorless rivals using settings as similar as possible. This means testing the R6 next to the A7III, Z6 and S1; shooting full frame 4K 30p H264 8bit 4:2:0 internal (these setting give as close as possible Mbps across the four camera as I read the various specs) and then seeing how long they can shoot for before overheating. With this test, we would know if the R6 has a fundamental design flaw compared to its rivals or whether this problem only applies when it is used in settings that the Z6 and A7III don’t have.
If this test showed the R6 doesn’t overheat with these setting (any more than the others), it would demonstrate it has matched it’s main rivals at least for video. Then buyers can consider if the R6’s autofocus, IBIS, in camera colour science are important benefits over the other choices along with the stills side of shooting.