1. Genji uses the speed of his suit to deflect so its not primitive
2. If torb can heal bastion as well as shields that would be op as fuck
3. Reapers SS isn't meant to be used in combat, and if he gain invulnerability after using it, it would mean free ult which is op.
4. If it gets put too close to objective it gets destroyed
5. If Orisa can't block dva ult why should any other
6. There's multiple exits and if your team were to jyst coordinate, guess what the other team loses the objective
7. You aren't supposed to be safe using your ult whenever you want, ults are supposed to be able yo be countered, making for a more technical game.
Thank you and have a nice day