While the 3 shots on Jing Wei's 2 are pretty good, I suppose. But as far as steroids are in terms of Smite it's a little underwhelming, especially considering how difficult it is to get the full effects of her kit. Every other one of her steroids/self-buffs involves knocking herself up (and being vulnerable) or blowing her escape in order to access it. Which as a hunter, is far less than ideal. (As evidenced by Cupid).
But, if instead of having her Explosive Bolts be just 3 shots, what if it was a toggled ability like Xbal's 1? While it was active, she burns a little mana per shot to gain increased crit chance and AoE autos. That way, she can have her steroid on demand, whenever she needs it, to make up for the fact that her other steroids are locked behind bad mechanics (knockups, blown escapes). I think this would help put her in a better spot compared to other hunters, especially considering her 2 doesn't increase attack speed at all.
Also, what would probably help her is to reduce the windup on her ultimate to like, 1 second at most. From what I've seen most Jing Wei players use that for an escape, rather than for damage as it is difficult to hit without your team CC'ing the target for you. The damage is decent, but the difficulty of landing the ultimate means that JUST doing damage is very little reward for such a hard ult to successfully hit with.