But the physical shape of the object will not increase the speed of the rotation. If you notice, the 'flat' aethercite in Azys Lla turns at about the same rate as the big fat one in the Sea of Clouds. and the pointy ones in the majorty of Eorzia. If the aethercite and lifestream "wind" worked on the same rules as physical wind, then the flat one should move faster than round ones.

Now I don't doubt that the aethercite can tap into the lifestream, but the effect doesn't seem to be physical. The trouble would be finding a way to generate power from aether that didn't consume the aether and instead just redirected it to create energy. If we created an aether engine that sucked away aether it would be no better than a primal.

However, an idea comes to me revolving around crystals. Assuming aether naturally condences into crystals and the elemental aspect of said crystals is felt when the aether in the crystal is used (Using fire crystals burns, ice crystals freeze, etc) then you could use various types of crystals and controll the release of their elemental aspect to generate different effects. I can see it now, a home wired to a device that disipates the aether from crystals for various functions. Ice clusters to cool the air, Fire crystals to cook your meals, Water shards to filter your drinking water.