Leftist Progressivism will then be dead for the next 40 years and America will be restored.
Time will tell. However, I suspect it won't tell the story that you want to hear.
People are becoming more aware of the conservative agenda now that it has the potential of becoming reality and I don't think they like what they see. Just as republicans were on the verge of implementing one of conservatism's greatest goals, the repeal and replace of Obamacare, something weird happened: people began to understand the full implications of life without Obamacare. They rebelled and the bill was pulled from consideration. Similarly, as Trump tried to implement the muslim "ban", the people rose up. Not only did they say no, they said hell no. Trump may eventually get his muslim "ban" but the people have already been riled up. A Trump victory on this issue with Gorsuch potentially being the vote that gives Trump the victory will serve to rile the people up even more.
The 2018 election cycle will be very interesting. If the enthusiasm of the progressives holds, control of the house and senate could flip to the dems. If control of both chambers flip, I don't believe that Trump will complete his term.