Note: I would have to test these out to really determine if I thought they were the right solutions to these problems. Also I don’t really do much competitive or follow detailed counters, etc, so take this with a grain (or five) of salt.
Bastion: +25% movespeed, and shrink him by about 10% in recon form. In sentry form, slowly decrease damage from 130% to 70% over 10s. Going back to recon form will reverse the process. This encourages repositioning, and punishes camping. Also, +25% speed makes Bastion far more playable in recon form. Alternatively, swipe an idea from my Bastion rework and allow movement during Reconfigure, while also making it faster.
Torb: Literally just revert everything but being able to throw the turret, the reload speed increase, turret targeting enemies hit with primary fire, and the hitbox change. If they’re so concerned with ‘feast or famine mechanics’, swap out the on-kill scrap to on-hit scrap, perhaps as something like 10% of Rivet Gun damage.
Anyway, you talked about not reworking things. Here’s how to (kind of) fix Torb without reverting the rework. New passive: Targeted: Enemies hit by primary fire take 10% more damage from Torb until either they go 5 seconds without being hit by primary fire, or Torb fires primary fire and doesn’t hit them. Enemies inflicted with this will be targeted by the turret. Can affect deployables. Stacks damage buff. This 1: rewards consistent aim, 2: allows picking off enemies with turret better, 3: makes Torb more versatile, allowing him to deal with tanks using his scaling damage, and allows him to deal with mobility heroes using his turret. Also perhaps make his turret explode and hit enemies if he destroys it up. Maybe allow his hammer to move the turret a bit if it’s at full health?
Sombra: Not sure as to which of these would be good or not, so here’s a few smallish ideas.
Revealing targets damaged or hacked by her for a second or two
Make hacked targets unable to charge their ultimate while hacked.
Allow a small amount of damage before interrupting invisibility and hack (15hp, or something. Also remove hitmarker when hitting an invisible Sombra if you don’t break the buffer)
Hacked enemies cannot cool down their abilities (currently if you hack someone who has an ability on cooldown, that cooldown will still be running while hacked, they just won’t be able to use the ability)
Hack map features? Raise/lower blast shields on Busan, etc? Probably too gimmicky though.
Lower Hack CD if it’s interrupted?
Just more DPS or ammo?
Cause hacked targets to take or deal friendly fire?
Destroy non-ult enemy projectiles with EMP? (graphically, causing them to fall out of the air, dearmed)
Soldier: Separate Helix Missiles into multiple shots? Damage resistance while being healed by Biotic Field? CC cleansing on Biotic Field? Throwable Bio Field? Perhaps make Helix Missiles homing during his ultimate? Headshots during ult? Reveal enemies within LOS during ult? More accuracy while crouched? IDK.
Mei: Slide during Cryo-Freeze. Not controllable while frozen, but able to use your momentum before freezing to slide. Vulnerable to knockback while frozen, though. Slow effect near other abilities, perhaps? Near-miss with secondary fire, close to wall or Cryo-Freeze, or near the ult, that is.