Could this work? How to? Terraformed gas-giant

I have an idea for a scify/lost technology world, that I would like to check the plausibility of.

What I want A terran world of large size. The crust of the world is thin, and hostile gas-organisms live underneath. During rare earthquakes poisonous gasses can rise, and once in a bicentennial blue moon sometimes landmasses can even shift to new global positions, blown of when huge amounts of gas erupts somewhere else. This catastrophe-prone world is habitable only because of its size - even a shift in global position will entail a smaller shift in climate zones if the planet is large enough.

How I thought it could be done A terran world of gas-giant proportion, where the tectonic plates are really thin and rests on the compressed clouds of the (jupiter-style) gas giant.

Proposed method For human life, it had to be shifted into a goldilocks-zone, which meant to pass it through an asteroid-belt. The tectonic plates are essentially hollowed out egg-shell shaped asteroids and cannibalized moons which simultaneously where sunk on the gas-giant, trapping light gasses underneath. Later fused, with gasses and water harvested from the world itself.

Question Is this idea completely bonkers? What would need to be done differently to make it work? Are there better ways of achieving my initial desire?

posted over 7 years ago

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