1. Auto ISO極簡陋，連minimum shutter speed都無得set
Auto ISO on the LX10, like all Panasonics, is implemented very poorly: it doesn't let you specify a minimum shutter speed (or relationship to focal length) at which the camera will increase the ISO setting, and the shutter speed it often chooses tends to be too low in low light because the camera is extremely reticent to use ISOs higher than 1600.
Both 1080 and 4K video are take from crops of the sensor, which increases the effective range of the lens to 36-108mm equiv in 4K mode, meaning you have no significant wide angle capabilities. It's a less pronounced crop in 1080 mode but still gives you a 30-90mm equiv range.
Unfortunately though, we can't recommend you use AF in video, because the 'flutter' or hunting introduced by the DFD algorithms is incredibly distracting and makes footage often appear soft.