The left/right brake temperature variation is extremely easy to do even for experienced pilots. I took me many years to consciously use my right foot more. However, it's not the end of the world. During the taxi to stand simply use the cooler brakes more and counteract with the tiller. I'm asking FOs sometimes to try this and so far the result is great. The controllability doesn't suffer any more than SE taxi IMHO. A 150/280 split can be made something like 240/300 just before turning into stand. For those of us without brake fans, this can reduce the turnaround by 15-30 mins.