Develop and teach courses in "third-generation physics"
By my reckoning, the first generation was classical physics, and the second was Quantum Mechanics and Special/General Relativity. We know there will be a third generation, and that it will be revolutionary, have a conceptually simple foundation, and an elegance and power unapproached by today's science. The current state of physics and astronomy has a lot of new phenomena that it can't explain, except by convoluted theories that have clearly gone off into the weeds.
Development could start as a series of non-credit lectures that introduce the new concepts and eventually be developed into full credit classes.
There is plenty more, and it is absolutely fascinating. Just do it!