For starters…I would make wugushi into a full 1h or 2h bow class instead of no need for a bow
Detox change:
Add attribute [poison eating]: when you detoxify yourself or a poison ally, you recover X%hp based on attribute level
(this would be part of detoxifys effect of taking the poison off you or an ally. If you’ve ever seen really extreme nature things people drain poison from the body by sucking out the infected zone and spitting out the blood etc, would thematically work)
Reason why for this change, it needs to be more relevant than cure/plague doctor
Remove bewitch- replace with poison arrow
0 cooldown arrow attack with poison attribute. 30% chance to poison enemy 5% chance to poison ones self.
poison attribute already makes it a good auto attack replace, the 30% chance to poison would make it less broken with repeated poison, but the 5% chance to poison yourself is based on allowing you to combo it with detox, however, it can severely have an effect on your character in situations were your detox is down for 5 seconds.
Jincan Gu - replace Triple gu shot
Overheat 3 triple shot 25 second cooldown
each arrow poisons the enemy once(can not be applied more than once)
This skill would shoot at the nearest 3 enemies and do the face dmg and poison them for however many seconds afterwards probably 6-10 seconds.
The reasons for these changes overall
Detoxify is wildly underwhelming and is unneeded at more than 1
Bewitch does not work well in PvE due to it not affecting bosses and the fact you usually kill most mobs before you can confuse them anways if it decides to work
Jincan gu- gu pot already does a similar if not a better job than jincan. Jincan has a long cooldown and hardly does anything to bosses
My changes would
Make detoxify relevant
Give wugushi an auto attack that thematically works with their character
Give wugushi a more mobile multi target skill because it only has single target skills(which is okay, but the fact jincan is just a bad multi target skill, id rather see a decent one)