Good job on 110 HC buff, but removing 150s was a mistake
I am happy with almost every balance change from the TWAB, except the removal of 150RPM handcannons. I personally prefer 140s and used to use them over 150s despite their ttk being higher. I don't see how you could buff autos to have a .8 TTK, but not leave a HC archetype that can do the same.
People wanted more range and better perks on 140s over 150s... not the removal of 150s. Even with these changes, 600 autos are still likely to dominate over 140s in crucible.
Still, I'm very satisfied with this last TWAB. Overall, I like the direction you're moving toward.
Only having 120, 140 and 180 makes it easier to balance properly. 150s consistently outclassed the other archetypes so this was their only viable course of action. Otherwise they would've have just nerfed them into oblivion.