At least we'll get rid of Florida with sea level rise

Interesting, a more simple and practical solution

Just my humble, non physicist opinion, but we would need more energy than the energy previously hold in all that burnt fossil fuel, released over the decades to power civilization.

There are big power sources around. Light isotopes for nuclear fusion. Heavy elements for nuclear fission. The earth heat from the underground. And of course the biggest of them all, the Sun (my favorite idea being space based solar power collection).

We could also choose a very stable way to fix all this excess carbon in the world, like diamonds or silicon carbide. we could just dump "solid-state-global-warming" into the ocean floor and forget about it

But I believe we will struggle through global warming instead of reversing it. Because there is too much inertia, no political and economical will. No real global coordination to build so much infrastructure and so much technology. We will continue to deal with the problem by not dealing with it