I hate seeing non-Widow players telling us what Widow should be reworked into because they all completely change her kit into essentially a new character without understanding why we like her current kit, so instead of giving her a new kit, this is what I propose, something that keeps her sniper identity while also making her feel more like Black Widow: give her a long range sniper form and a close range melee form.

Firstly some buffs to her sprint are in order. She will now have unlimited sprint, but each jump depletes the sprint bar. You can jump 5 times before the sprint bar is empty, but it begins refreshing 1.5 seconds after each jump, and if you jump again while it's refreshing, it'll deplete again. The height she jumps at will also be increased slightly since she's also just a meter or two short of the places you want to jump to.

Her sniper form will now receive some changes. She deals 15 less damage with bodyshots and 20 less damage with headshots while shooting up close, but now every shot landed from any distance applies a bleeding effect for 3 seconds to the hit enemy, encouraging a more sniper-like playstyle by staying further in the back and picking off enemies instead of rushing to the front. Every other ability remains the same, R1 sprint and jump, L1 kick and pull, L2 to zoom, square to reload, and circle to activate teamup.

By pressing triangle, you switch to melee form. Her batons stay the same but each hit gives her 10 overshield that stacks, allowing you to stay alive longer without needing to increase her base health as that could mess with the balance of her sniper form. While in melee form, her L2 becomes her Widows Bites, which work like Peni 's web net, freezing an enemy for 0.5 seconds, then applying a slow effect for another 0.5 seconds after the freeze is over, and the cooldown of the Widows Bite ability is only 2 seconds, allowing you to spam stun enemies while in melee form.

Lastly her Ult remains the same, but now the longer you hold R2, the more damage the initial blast does, and if you charge it enough, it'll deal 300 damage, enough to kill a squishy and cripple a Tank, but the tradeoff is the longer you hold the charge, the more the screen starts shaking, decreasing your accuracy. The leftover residue from the Ult also applies bleeding that lasts as long as an enemy is standing in the residue, but does less damage per second than her sniper rifle bleed does, and keeps the slow effect it applies to enemies.

I would also like to see a teamup that allows her sniper mode to switch to burst fire, shooting out 5 of her sniper rounds her R2 press. The tradeoff is that the burst fire lasts for 5 seconds, and then goes on a 40 second cooldown. As for who gives the teamup, it doesn't really matter, but I do hope it stays in the game for a long time her a lot of the current teamups have. 

Now, does this sound a bit broken? Honestly, no, I don't think so. The powercreep in this game is absolutely insane, and with each new powercrept character added, the weaker Widow looks in comparison, and a rework like this should help even the playing field by making her as strong as the average DPS character, while not being broken like Daredevil, Gambit, Black Cat, Phoenix, etc, somewhere around A-tier range, a viable pick that people won't flame you for picking

If Black Widow were to be reworked, this is the only way I would accept it