As a suggestion, the game should gather statistics on how you complete the missions and given similar balance adjust for your skill level, that is if I tend to complete most missions with max 2 soldiers wounded, it should boost up my success rate in autoresolve as opposed to when I get my soldiers killed on average, my autoresolve should accordingly have higher fatality ratio.
Why this makes sense? Because many of us don't have too much time to invest in every mission, yet after 2-3 autoresolves the squad is shredded to nothing, while with the same squad played manually I get maybe 1 dead in 4 missions (I do retry).
I am not sure what the exact learning algorithm should be, how complex to make it, but I guess it should rely on current system, just adjust success/failure chances via learning curve considering fatalities, number of wounded, soldiers XP level.
Any ideas?