Your making an argument for statics stretch and suplementation of arginine in relation to improving performance. I will comment on static strecthing as i wrote my bachelor project about it.
Most litteratur conclude that static strecthing doesnt have a direct impact on performance, but can have a negative effect on performance acute.
“Shrier, I. (2004). Does Stretching Improve Performance? A Systematic and Critical Review of the Literature. Clin J Sport Med”
From the abstract you referenced about static stretching, fascicle length has not been researched.