I thought that was the most predictable part of the series so far. The Capitol has been destroyed... the next storyline will be persecution of American Muslims.
If you enjoy the show I am glad, clearly it is an agree to disagree moment.
That will be part of the overall theme of the series, but I think next will be someone who will call the presidents bluff, which he has done twice now. One on Iran, the second was on Michigan. Will a bluff work on the next one?
This show so far has definitely taken things in today's society such as prejudice of Muslims and police shootings (not sure if anyone caught it, but when the president was addressing the crowed at the capital building. The guy who looked like he had a gun and was shot actually had a cell phone as was shouted out by a spectator) and the show will probably continue to point out today's issues.
Additionally, we don't know what the general's motive is. In the first episode, he was talking about starting a coup. For all we know, he could be behind the attack in some way because he is not happy about past policy decisions made by the previous administration. The general may know who was the designated survivor and thought he could manipulate the president, which has not happened yet. Maybe the general is just a stereotypical gun-ho military man.