It would be fascinating to see a MacBook powered by the A9X rather than Core-M. 
Based on the benchmarks, point 2 would be solved. 
Point 1 is an unknown but the iPad Pro battery is barely smaller than the MacBook&#x27;s, it&#x27;ll be interesting to compare battery life. 
And I&#x27;m sure Apple would have more leeway on point 3--it&#x27;s just a question of profit margins.