"Quake" conceptually feels at odds with what it actually does.
Say there are two giant 1000 high spires. One has a teeny picket on top, and one does not. If an effect called "quake" happened on both, my intuition would be that they'd both collapse, and that the picket would probably take a bit of damage from falling.
Instead, building foundations appear to be made out of bedrock:
I'm not really sure what changes could make sense balance- or intuition- wise, though. Most terraforming is about being able to raise a ballistic unit or structure, or being able to sink important eco or special weapons.
As long as the current interactions are in place, there are very few situations where even the suggested revised quake would be able to do anything.
Without the current interactions, well... Being able to secure terraforming projects by sticking gauss or faradays on top was what made robust geometry puzzles possible. Perhaps if it was only able to send DDMs down to earth, rather than dragging up superweapons? It could be interesting to experiment with, though I don't think mechanical changes like this would be possible to test through the quick modding system.