Seems to me it would have been easier to build 4 or 5 smaller towers which could fit in place of the “dome” sized one you were speaking of. That way if one went out for repairs the others would still be producing their combined 750 to 800 thousand watts....as opposed to losing the entire megawatt productivity when the “big one” went down and had to shut down for repairs.
Wind power scales to the area in sq ft of the air inlet or blade rotor area.
Smaller distributed turbines have the advantages you mention but the push is for larger rotor diameters to get max power and the higher towers get the blades into clean airflow and away from ground turbulence