The lack of due process and the threat of extradition on a whim is one that feels less likely to happen to me as a caucasian with US citizens as family, but the impact of it would be life-changingly poor. I'd rather just not travel to the US, for tourism, family or business reasons.
I'm not sure anything done in the last 3 months is much of a surprise to people who listened to his campaign talking points. It seems to me that people just thought he was a lying politician who lies, and this was just more lying. What's caught people out is that he's doing it all, and believes SCOTUS will never condemn or find illegal a thing he has done so due process is an abstract concept only, and others consider themselves immune for actions covered by Exec Order.
It's all quite sad and worrying.