I wonder why summon weapons can't make critical strike... If they can, it might be a good idea for whips to bonus minion's crit rate.
Minions being unable to crit was caused by a coding limitation back in 1.2, when there were literally 3 minions in the entire game so it wasnt really worth fixing.
As the class got more and more new content with time, this limitation was never fixed and now summoner is balanced around not having natural crits and instead relying on hardcoded stuff like Crit Whip Tags and Monk armor's set bonus
Making them crit now would be a global DPS buff to all summon staves in the game, the majority of which they don't need, and a change that would require a rebalance to all summoner gear throughout the entire game to include natural crit change, one that is completely unnecessary because Summoner's problem was never the inability to deal critical hits and the class works just fine as is.
6. Lava Fishing: I see no real gameplay reason to make it so slow. Sure, it makes sense that you would find less fish in lava than you would in water, but this is yet another contributor to just how grindy getting the Terraspark Boots can get. Also, nothing you can get from lava fishing is outright overpowered, so this isn't really a balancing concern. I say make the lava fishing catch rate similar to that of fishing in water. This would make a major feature touted for 1.4 a lot more user-friendly without breaking anything.
Lava fishing is slow because it has the best loot pool of any fishing spot in the game.
Fishing in normal water is much faster but a lot of your catches are Bass and other low tier catches, while most of your catches in lava are Obsidifish (material for the best QoL potion in the game), Obsidian Crates (better than the average crate) and Flarefin Koi (which is basically half a Seafood dinner because Inferno potion is pretty useless)
9. Pirate: The Pirate is a notoriously useless NPC in Terraria. To give him a use, perhaps allow him to sell the Gold Ring? I know that seems like a big change, but at least it'd give him something worth buying without being very game-breaking. Also, maybe you have him sell explosive bunnies again? I know he used to do that, but maybe that's too broken given how powerful they are now.
One interesting idea would be to turn the Pirate Set he sells from a Vanity set to a Whip based armor set, much like what was done to Obsidian. Once the latter inevitably gets a big nerf, a pirate whip set will still leave us with a viable Whip armor in hardmode.
This probably wont happen but one can dream
or play TRAE where I made this change
I'll join those saying Blood Thorn and Cool Whip need a buff badly. For the Blood Thorn it needs an increase in both range and damage, but for the Cool Whip I'd like to see if there's any way to make the snowflake apply tags to enemies instead of damaging them directly.
A range buff for blood thorn won't really do anything unless it's so ridiculous that it covers the screen; its range against enemies is fine and its attack style prevents it from hitting aerial enemies reliably. Something that'd go a long way is a noticeable lifespan increase to the Thorns, you'd be able to cast them to stunlock grounded enemies and deal constant damage to them. Combine this with a removal of its damage falloff and Blood Thorn becomes a much better weapon.
Cool Whip can get a boring but practical solution: a tag damage bonus of its own. Literally everyone's problem with it is that its On-hit effect doesn't buff minions in any way, and this fixes that problem. Also works as a compensation buff to Blade Staff once it gets its AP bug fixed.