Excellent points, I see your hip to sativas. I got flamed, harassed and insulted by the punks at PG showing sativa bud in 2 gallon baggies, shots taken from 6' away which didn't show anything of course. Those PG MJ nerds don't have a clue, just suckas for pimps hawking sugar coated buds and snake oils.
This is what Uncle Ben's "hay" looks like up close:
With sativa, you trim off all fan leaves leaving only trichome covered single bud leaves and calyxes. Notice too that the calyxes are bigger than normal. My Zamal, O. haze, and Vietnamese dalat, all sativa, had the exact same bud structure.
Keep it real,
UB