I wouldn't worry too much about the diamond wires. I had a short conversation with Matt; the gist was that unless you're a champion sailor, other controls are more critical.

Speaking for myself, I had trouble shifting gears yesterday as the wind increased. The boat just didn't feel as good to weather as it did in the lighter stuff.

I'm convinced mast rotation is critical! If you're off, even a little, performance will suffer. IMO.