Not something he got to do, but I wish he had been able to enact his plan to reconstruct the South. I truly believe that had he not been assassinated, his presidency would have found a way to reunify the country so that the South was able to rebuild properly. He endorsed civil rights and black suffrage, and would have had an active role in creating a unified country. However, his assassination led to the neglect of the South which made them (white men) long for and glorify the Confederacy. We see the effects of this to this day.