They will try that much is certain. There are three bills up for passing in a government that is now one party rule for at least two years. So yes they will try to ban semi autos for certain as well as standard capacity magazines and private sales. Those are 100% going to be signed into law. They will try for mental health checks, insurance and buybacks those laws will also likely pass and be signed how well they are enforced is the question.
Your points are all valid, but at the end of the day...if nut-case ‘larry’ wants to go out in the trailer-park and shoot twelve people, with just a single-shot Derringer, he can probably do the job. I don’t think this crowd grasps that or intend to go and make Derringers into forbidden guns or associate them as ‘assault-Derringers’.