Yup, its been a shame watching the narrow leaf fans get beaten into the ground, while the broader ones sit pretty. I don't think it needs more years for me to understand it - it just took this long for me to look at the data. Its right there in black and white.
I find that once you learn all you can from something, then it is time to move forward or risk falling into deeply worn ruts. When it is clear that the environment and conditions are incapable of sustaining and supporting healthy growth, especially for otherwise fantastic-choice cultivars, data can lead the way out of the ruts, though, and back into rapid healthy growth. I'd rather more enjoy watching the soil go fallow again and invest my time in building on what's already been documented and learned, in order to keep that good pace in moving forward.
Seed, you always have a way about you of helping to sort things out - I am most grateful!