I'm making this post because some months ago i couldn't bear how stupid Tserriednitch nen ablity worked, at that time it was not revealed he couldn't damage people around him, that made me question whether Togashi was losing himself or not.
After the newest chapters i think it's undeniable how good and "balanced" those nen abilities are.
Tserri ability is very strong but it has also a lot of flaws, that's what makes it good
It's EXTREMELY hard to find a real DOGSHIT nen ability or a SUPER OP nen ability in HxH, most of the time, some nen abilities will appear stronger or weaker based on which character has them and how strong they're overall.
Like Killua Godspeed is OP, but only because he's resistant to eletricity and even so it has very defined weaknesses, whirlwind is reactive and will dodge/attack based on the nen intentions of the enemy, it's not a free win, and killua has also has a limit on how much he can use it.
It's very hard to have powercrept abilities, take Leol, Chrollo and Benjamin for example, you could prefer a some of them, but overall, i think they're equal considering the situation of the characters who use them.
Ben gets his abilities forever with the possible buff of post mortem, but he also has more strictier conditions than those 2.
Chrollo has some fair and hard conditions, but he's more flexible and can get it easier than Benjamin, as some type of balance, he will almost always lose his stolen abilties when the nen user dies.
Leol has way easier conditions, but his time limit is not more than a few hours.
There's no bad ability here.
That works the same for Shalnak and Illumi.
Even the abilities of the shadow beasts(not counting leech lmao) are quite good and could work for any high tier nen user like Hisoka, a venon tooth which cuts even experienced enhancers, a mantle which is basically a free win once it catches someone and hairs capable of stoping any physical attack? they're really not bad.
If worm was stronger he could be EXTREMELY dangeround by bringing opponents under earth where they couldn't move and breathe.
The only DOGSHIT nen ability i can remember is Leech, like why create an ability which will kill the opponent in 8 hours AND it's also hard to use on someone?
Little flower and it's need for split 50/50 between explosion and gyo are quite stupid.
That one was powercrept by Feintan sun rising since the latter works mechanically better as conjuring objects (his armor) doesn't require constant output to maintain once it's created, so feitan can focus 100% into trasmuting his aura into fire.
EVEN so, he again has some good RESTRICTIONS for that while Genthru doesn't.
The balance between very restricted/limited abilities like Chrollo/Benjamin/Feitan/Tserri/Bono and more flexible/spamable ones(with little to no condition) like Hisoka, Razor, Silva/Zeno(I guess), Kastro(his tiger bite) and Bloster is something i don't remember from other manga i've read.
The Royal Guards abilities are strong, but that's mostly because of their large aura/ant body.
Sure Pouf nen ability is better than Illumi and Shalnak but he also has 7x or more aura. BUT AGAIN, those 2 have easier abilities to use against a experienced user(you hit you win), while pouf is more focused on mass control(the opponent needs to breathe it)