Reinhardt charge counters Bastion completely. It's great.
Unless you charge while he's looking away though, he can gun you down before you reach him. It can counter him sometimes, but it's not a reliable one unless you can make sure he'll be distracted with say, a flying Pharrah shooting rockets at him from another position, or if you're like Rainman and you count his bullets to know when he's reloading.
Torbjorn is in a really weird spot, I don't even think he's good even with turret 3. A lot of the time, at least in the games I play, people just melt the turret even with his ult up and shit, there's just so many ways to do it, it's not like Bastion at all imo. First Bastion does more damage than even the turret3. Second, the turret is dumb as shit and only tracks one person, and tracks pretty slowly if you have fast movement. You can bait it on a tank, make it lose tracking with Genji dash or Tracer blinks, and just overall fuck with it. The second aspect is you can kill Torbjorn pretty easily, even with his ult on, because he generally doesn't do anything at all but stand next to his turret. Even with the ult on I think Tracer one shots him with her ult, or it's pretty close, and if he's standing next to the turret, the turret also almost dies.
He's just not good, not even as good as Bastion which I already find kinda shitty tbh, though the random Bastion swap on defense on last objective can be quite the mindfuck and get you a full teamwipe because people didn't expect it.
His weapon is kinda alright, like the single shot has drop so it's a bit annoying to aim properly, but it does surprisingly good damage I find and the amount of shots before you have to reload is great. Maybe if they straightened it a bit more like a fully charged Hanzo arrow it'd be easie to aim for headshots, and potentially increased the damage a bit. The shotgun is awful, it does less damage than shooting the primary, the only upside is it's kinda easier to aim which is a terrible tradeoff for doing less damage I think. It should have damage dropoff like a normal shotgun, but do more damage. Shit also eats your ammo like crazy. It's basically like a very bad Roadhog primary. It does 100dmg for the whole thing hitting iirc, while in comparison Roadhog does 220, and to be honest the range aspect is arguably also better on Roadhog, at least at mid range(but long range you're not hitting shit but idiots with the primary gun on Torbjorn). So this part needs buff to make it worth using, or need to be removed to make room for something else.
Then the whole scrap and upgrading the turret system sucks. I think they should just make the turret a static lvl 2, and upgrade it to lvl 3 during your ult(maybe make it better too than current). Lvl1 turret is literally nothing, it has shit for health and does ridiculously laughable damage, so you NEED a lvl 2 turret to do anything, which you can't get that easily due to scraps nonsense. Lvl3 upgrade is kinda meh too other than the health, it adds rockets that do good damage but are avoidable and don't shoot very often.
Then his armor buff is also shit. It's like a very shitty Symmetra shield. Just remove the whole thing and give him a new skill, or make it better and not dependant on scrap. Armor aura, armor dispenser(automatically gives armor to people in range), some shit like that, or just change the concept to work better with the rest of the rework. Maybe a temporary shield for your turret, very short but if you time it right, it prevents it from exploding from Tracer's ult and shit, maybe.
They said they had plans to experiment next year(I assume that means january) with Torbjorn, so we'll see.