You’d need 5-6 times as much steel as you need for a typical height wind turbine tower, using the standard design, to make it twice as tall: https://youtu.be/Jk02_MzyLBI?t=534 (turn on cc and auto-translate). If you build it like the Eiffel tower, you only need 3 times as much.
I think I was maybe 20 years ahead of you on that.
I posted this pic from circa year 2000, a couple weeks ago but now I can’t find it - probably moved to some new “topic” or just deleted for its potentially factual, or at least helpful, content…
Hexagons are kind of like the inverse of triangles I think. If bubbles made a regular shape in a plane, they would make a honeycomb pattern. To connect the bubbles, or balloons, together you would use a net made out of triangles. Here your AWESs would be the round bubbles that sit inside the larger hexagon clearing made by the triangular net. The net would be the icosahedron, the AWESs the truncated icosahedron.
Valleys I don’t know, not everywhere has valleys, but nets and towers working together is at least interesting I think.