If you don't like that specific weapons or items were nerfed, maybe you could download a specific mod that rectifies the issue you have? Just a suggestion that could help you?
Long story short. Once TModLoader catches up to 1.4, I'm sure people will flood the community with un-nerfing mods and I'm going to be on that band wagon. (Tho my mod will nerf the Last Prism, for obvious reasons, if you look into MY background and posts in the past, you can see I'm not against actual balance where it could happen.)
The thing is, poor Fetid got nerfed for a stupid reason in a stupid way. The poor thing wasn't even borderline useful, it was a joke weapon and now it's a bad joke weapon as it just, doesn't do the joke part anymore, the stupid fast attack speed thing it did have.
In regard of the progression system, trying to force that progression system on people is actually the way to limit the player and make subsequent playthroughs less exciting due to having less options, less fun and less stuff to explore and show your friends. I remember when I have gone crazy and started a summoner multiplayer playthrough. When my friend realized how strong the Reaver Shark was, we were laughing. Good moments. That's what these nerfs ruin. The silly moments. When you actually have FUN.
The nerf on the Reaver Shark was one of these no brain moments too. That nerf along with the crates just destroyed fishing altogether, to the point I'm actually happy. Now I can ignore the Angler and his stupid quests and the whole braindead fishing minigame. Relogic pretty much shot themselves in the leg by killing one of the "major" features in their game, but face it. Terraria's implementation of fishing is neither exciting or relaxing, it's a mix of worst of both worlds: everything trying to kill you when you try to relax is annoying, but watching a bobber between mobs is boring to the point it can make people fall asleep.
Not many people gonna say: "Too bad fishing is dead now, I liked it."
More people gonna say: "Too bad Reaver Shark is nerfed, I can't access early game imps through a tedious defensive playthrough that is painfully slow to pull off."
I still enjoy building beautiful ponds in my worlds.
I just don't fish in them anymore, since there is no point to do so.
Note that the fishing information accessories in the current state of the game are useless - since high profile fishing is useless, duh - and thus I can totally skip acquiring the Cell Phone pre-hardmode. Other changes like Journey mode also punched nails in that coffin. Master worlds died the same day they got released, I can always just play a Journey world in Master difficulty and duplicate all the fish after catching some sample. No more sleeping in front of my computer, Journey is the way to go. (Like yes, I can literally fall asleep during fishing, it is just as exciting as watching paint dry.)
If we are talking about mods, the same mod I plan to make also does an interesting twist: adds all the information accessories locked beyond fishing quests to be obtainable from the Travelling Merchant. That way the poor Angler can remain in his caged locked up in the Underworld, never to see the light of the sun or feel the breeze of the ocean ever again...
I'll have a lot to do for sure...
(Look at that I can solve dozens and hundreds of the game's broken mechanics I just need TModLoader for 1.4 out and a book to learn whatever programming language it uses.)
I am a sarcastic as... ...can I call myself an something? Or is it not okay? Is it cyber bullying myself if I call myself something? Not sure about it. Whatever. I didn't use the actual word to describe myself. The hint is probably vulgar in a way of itself.
Anyways. I'm a generally helpful person with surprisingly dark humour, overwhelming sarcasm and an ego to match all my bad habits, but I also have a perfectionist view on things. Everyone does mistakes, the way one treats those mistakes can be a mistake itself. Nerfing and buffing is often a way to admit that one did a mistake. Nerfing and buffing the wrong feature is often an even worse mistake. (I'm looking at you, Hearthstone, you unbalanced mess, I'm looking at you.)
That said, you can't fix silly, you can only embrace silly. If you don't embrace silly when you do silly by accident, you're not developing a game, but policing people.