Actually, I was thinking it was extremely low hanging fruit he could have proposed in his first 100 days that would have been (fairly) well received by the public, even by centrist Democrats. Of course, the liberal screech crowd would have been opposed because "Trump," but the polls on the matter don't lie. 70-75% of Americans want term limits on Congress. Far better chance of being positively received than dicking with health care. Good chance of being positively received more than tax cuts.
A simple fix in my opinion. Give the people what they want. Of course, Congress isn't going to vote themselves out of a job, but then it gets sent to the States to get voted on.