So... We know the composition of the atmosphere. We know the temp bands going down to the surface. We know the pressure bands going down to the surface.

So, have we started to brainstorm of how to spray a whole host of bacteria and viruses, including sulphur eaters, extremeophiles, and genetically modified organisms, and use satellites to launch into the atmosphere?

Sure, it would be humanity's first planetary geoengineering endevour but its not like it'll get worse than 61 MPA and 600c

And the cost of a few space vehicles is what? Wouldn't be THAT expensive. And we'd learn a bunch.

Hmm, maybe China would be interested. Opening up new earth-sized landmasses would be incalculable gains for humanity.