I love the race for the first hit in this game. I swear, people still think you get extra meter or something. It took me a few days before I realized... there is no point to play unsafe at the beginning of the match to get the first hit anymore.
That said, when I'm feeling frisky... I like using B3-1+3 or F4... sometimes walk forward a bit and B2.
I usually b2 on first round if I don't have any insight on my opponent's habits. I use the result(did they get hit walking back/forward? did they just block or yoloport?) to dictate actions in future matches. If they like to stand there and crouch block, I might d3/ walk forward and throw. Hell i've even did a round start yoloport once or twice. Sometimes depending on the MU I step back and b1(whiff), 1+3 to catch a counter poke. It's Noob, and as he lives and dies by the footsies, knowing your opponent goes a long way.