I've found absolutely ZERO use in spin, except for using it on prediction that someone is gonna use the Sareena knives fullscreen. I EX it and now I can just walk us into the corner for absolutely free. But good players don't just throw that out randomly. Only other time I use it if I don't feel like anti-airing with standing 4, very rarely do I use the spin. Even as an anti air option it's not that good because it's hitbox against aerial people leaves much to be desired.
That aside, i'm really sad about this iteration of Kung Lao. I'm still gonna main him, but man it's just not as satisfying as MKX or 11 Lao.