Even old Southern me is a defender of Stanton. He was the logical one (even if Seward had been able) to take the reins because he held a lot of sway with the military - the best means for holding things under control. I really don't care about his personality quirks. He served this country well in its time of need -- certainly much better than some very high officials today are doing.
As for Booth's motives for killing Mr. Lincoln, I understand those too. I would gladly take a derringer to Jihadi John and his ilk today. And I guess that puts me on a hit list somewhere. Of course, I'm going to have to take lessons from Joe Beckert and Wes Harris first because I have never held a real gun in my hands in my entire life.