It looks like a Clintonian (Bill not Hillary) third way platform of keeping the system and compensating losers with fiscal transfers and (re)-training. It hasn't worked for the New Left for the past 30 years, I don't see how it could work for Rubio.

The fundamental problem is that everyone is trying to be Reagan, without sharing his resolve and adamant belief in his ideas.
Reagan and Thatcher outright rejected communism and socialism as fundamentally opposite to freedoms following Hayek's ideas. They also rejected social-democracy and Keynesianism. It was a 180 degrees platform switch from anything the left or center left proposed and they stuck to it. Trump won because he adamantly rejected the Neocon/Neoliberal consensus (although he backtracked on some ideas lately).

Rubio is proposing to tweak a system, while it needs to be smashed.