All pinnacle weapons will be sunset, they are too powerful compared to the rest of the guns and Bungie doesn't have the ability to do as much balancing as they need to, that's why so many of the guns now roll with the same boring perks over and over.
There is a 0 percent chance that the new sword isn't nerfed within 6 months. WAY to overpowered compared to the sandbox. I wish they'd stop and realize ALOT of stuff that ends up being broken is due to the stupid mods that they insist on keeping in the game instead of replacing with decent perks for us to chase. I think the sword would still be OP, but add in the sword mod and it melts everything with ease.
Gnawing is awesome because it's right back to boring ass year 1 meta for most in the crucible. I rarely switch to my other weapon when I have it out, there is no need. It has the range of a scout rifle with the stability of a pulse rifle, except with 4 times the magazine of either. They need to do a real dig into overlap on gun types and the ones that work too well in ranges that are meant for other types.