I think Trump knew the House was in trouble and did little specific campaigning for them. He spent most of his time concentrating on the Senate and it looks like it paid huge dividends.
I agree with you. Trump as we all know is a 3D chess player. Get Senate. Get judges in place, etc. Then circle the wagons around Pelosi and company.
We have a Red Wall. Chuck-U.can no longer stop Trump court nominations.
These will sail right through as well as another Supreme Court nomination should one open up in 2019.