There is no such thing as the optimization of platforms - the foundations for wind turbines are custom designed for each turbines (because, strangely enough, they have to carry serious loads) and mixed used is not recommended.

You could optimize cables, but this is already done by having large wind farms which fully use the capacity of a given cable.

The best place to do a mix of technologies is the grid itself - it is completely inefficient to try to have each producer be a perfectly balanced supplier - better to do the fine tuning of the system at the system-level, where all the individual movements are blended and blunted, and the adaptation effort can be smaller, in aggregate.

Wind power