You know who I've always liked? Hanzo. I think I'll be a Hanzo main now that Roadhog was put to rest.
They already kinda do this in HOTS. There are supports, then there are "specialists". I still don't think they quite got the categories right cause of how healing works though. It'd probably be a better fit in OW to just have specialists like Sombra, Torb, Sym, then have healers like Ana/Zen/Mercy/Lucio.
I think HotS and OW both suffer from category issues. HotS has a minor one - the "Specialist" category should just be deleted, and Varian should be called a "Warrior" like he is (his design in general bothers me - why does he get to choose between damage and tanking while no other character does?).
In Overwatch, there's this entire shitty category of "defense" characters that are largely not worth picking. I would prefer to see Overwatch delete this category, and rework half of the defense characters to be "support" (healing and/or damage negation), and the other half moved to offense.
Blizzard need to create a new section for the heroes called "Utility", because Sombra and Sym definitely belong in that category.
That's just creating more useless categories that confuse people during team construction. When do you pick a "utility"? Most people won't know. It makes more sense to rework Sombra and Symmetra to be real support characters.
No one likes losing to one move. It's brain dead.
The 2 reactions to the nerfs are VERY similar. DVA was considered trash after her nerfs. Player got good and adapted. If you want easy kills, pick an actual DPS. If you want a 900 health hero that hits like a truck, can pull a character towards your team(which by all accounts is an instant death), with an ultimate that can wipe a team out you pick Roadhog.
Each character has like 3 attacks maximum. We are all losing to "one move" - lol.
D.va was nigh unanimous in competitive play before her nerf because she was ridiculously overpowered. Roadhog was tier 4 in pick rate and still got nerfed. Get the difference?
Also, that list of yours is mostly fabrication. Roadhog doesn't hit like a truck anymore, he doesn't have 900 health (LOL), and his ultimate is one of the worst in the game in terms of "wiping out a team" - if you can burn your ultimate to kill a character or two from a wall pin, that's usually a good use of it.
Also, the ability for Roadhog to get hooks is almost entirely based on his ability to flank. Against skilled players, you very rarely get hooks by standing in with your team because everyone knows you are right there. You have to move around and try to find angles to get hooks on people that are awake, and you can't do that while also asking your team to travel with you - get it?