LKA in R46 seems to work well on motorways etc but is a pain on rural roads where it does need to be turned off.
In ref to blind spot.... Don't you find the blind spot monitor effective?
I find the R46 good on motorways - most of the time, but it still occasionally tries to bring me (quite sharply) off at a slip road if I'm fractionally more left than right in the lane, to counteract I find myself keeping a whisker further right and also grabbing wheel slightly tighter at these points, neither is ideal or should be required.
As others have suggested I'm thinking the LKA settings/accuracy/over reacting is controlled from a separate control module and as such the info unit ver R46 is irrelevant to it, bar how and when it is switched on/off, someone might reply if they know this for sure.
Yes I find the blind spot detection indicators on the mirrors quite good, but that's not to say I would fully trust them, especially considering the reliability of other monitoring systems on the MG4, such as LKA and the randomness of of the road graphic on drivers display, sometimes showing vehicles not present, and other times not seeing ones that are.
Just as a comparison to that I got a lift in a Tesla 3 recently and was very impressed with how it faultlessly displayed everything around it, cars pedestrian, traffic lights and even stop signs - albeit much longer established tech and more expensive car, but I think where monitoring systems are installed they should work reliably, if a manufacturer wants/needs to cut corners to save money just don't install them, it's disingenuous/bloody annoying.