I understand if weapons being sunsetted would be good for the meta and I'm all for that. But I think for swords and a few other weapon shouldn't be affected by it. Most swords in the game, all have the same stats with the exception of a few having 1 or 2 extra perk options, and re aggressive and light weight frames. And overall, the swords you pick is more cosmetic rather than each being different types of swords.
Another weapon type I think should be immune are the linear fusions, there's only 2 random roll options currently in the game. And with the currently plan, only one of them (line in the sand) would only be good for the first 3 months of the September dlc.
Special ammo grenade launchers also have this issue, only there being martyr's retribution. And I can also argue that machine guns will also be very limited in choices. Unless there's plans to bring more of these gun types in the next 2-3 seasons, then I don't see it being a problem.
And the last set of weapons are the two individual weapons drang and mida mini tool. If exotics aren't planned to be sunsetted, then these guns should also not be sunsetted since they are an extension to there exotic counterparts.
I think these are just some things that should be looked at and adjusted with the upcoming sunsetting.