Conditions of a more ideal version of earth
What would be the specific conditions required for a planet to be a more ideal version of Earth?
I want the world to have a much larger proportion of land covered by lush jungle and forest ecosystems with only a very small fraction of the world populated by human-esque people.
It would be in a galaxy with a G star similar to our sun.
Would the conditions be almost identical to earth or are there any subtle or non-subtle improvements that could be made in any of earth's properties (atmosphere, geometry, etc.) that would provide a more suitable world for nature to thrive.
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In astrobiology, this concept is known as the 'Superhabitable Planet'.
Such a planet would be more massive than Earth, up to about 2.5 Earth masses. This additional mass provides shallower oceans, and lower topography. Additionally, it is likely that this feature will be paired with a thicker atmosphere, which distributes the warmth received from insolation more evenly from the equator to the poles.
The star that such a planet orbits would more suitably be a K-class orange dwarf. These stars emit much less UV radiation, and have longer lifespans. Additionally, the habitable zone around such a star doesn't move so much during the lifetime of the star, so over a long timescale, the planet's climate will be more stable.
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