So my opinions on all of the changes:
ARs: Sounds fine, but we'll see how the range is. As long as the tickle isn't happening anymore and they're killing in the same amount of time as everything else, good.
PRs: Sound way too overpowered still. The Low RoF, High Impact class is what needed the nerf, not the middle ones. All this nerf does is stop my Time on Target from melting, Messenger is still going to destroy and will be the new meta. I'd honestly say make Messanger-type PRs take 3 bursts to kill and 2.3 with Headseeker, right now they're ridiculous.
SRs: Still sound garbo, but maybe they'll get better now that Thorn and TLW won't be showing up as much
HCs: All depends on the new falloff and magazine nerf. If they did too much, HCs are back to being beta bad, and that's a damn shame.
Shotguns: GOOOOOOD. GOOOOOOOOOOOOD.
FRs: Gee thanks for nerfing the hell out of my GIVE/Take after I got an almost perfect roll on it. A little worried that Exile's Curse could get out of control fast, but we'll see.
Snipers: They were fine except for Final Round and now Final Round is dead so no problems here.
Rockets: Needed a little more blast radius and a little less G&H radius, so this is fine.
MGs: ???
Hard Light: Love it. I used it a bunch when S U R O S R E G I M E was the top tier and I'm glad to know it doesn't have any falloff now. Contender in Crucible, I think.
Nechrochasm: Depending on how much the magazine was buffed, this thing could be really good now.
TLW: Thing was never supposed to be a sniper and I'm glad to hear it's being turned into a shotgun.
Thorn: Still good in Crucible but not godlike, now has use in PvE.
The hell is a Hawkmoon?
Ice Breaker: Sounds like a PvP nerf that ended up ruining it in PvE. Shame.
NLB: Sounds great.
Black Hammer: I don't like this. I really don't like this, but I understand. It must be annoying to watch someone break your boss encounter by using a Legendary with the power of pre-nerf Pocket Infinity.
LoW: Honestly think they should have increased the radius a bit instead of tripling the effect's power, but whatever.
Gjallarhorn: The most controversial of the changes, but as long as the wolfpack rounds still do about .5 rocket damage, it'll still be good. Just less melty. Knew this was coming because basically right now the strike loadout is either Ice Breaker or Gjallarhorn with some good purples to replace them.
Reduced Weapon Stats: Sounds like they might be cutting and changing a few of the weapon classes. Hopefully this means the 3-shotter sniper (20/20 AMR7), the bullet hose (Unwilling Soul), and the Felwinter's Sniper are getting removed.
Stat Perk Tuning Pass: This is the way they're secretly making us move on from our old guns, specifically in Crucible. The old perks will be significantly nerfed now, so only the old HoW weapons and the new TK weapons will be good.
Talent Grid: Okay, good I guess.
Other Things: A bit nervous that they're not addressing Red Death despite it being the third best gun in PvP. They did mention a damage nerf to its class, but it still sounds like it's going to be too good. Time will tell.