In my opinion the skill that adds feather duster is better, the thing with HHG is that you always end up destroying it early on, it's as if you hadn't used a skill at all.
Run hunting grounds as a proper card in your deck, perfumer can search it.
Feather duster can at least be used as a discard for karma or something
Not using Mai all the time, but I'm worried hunting ground might conflict it at times. I got harpies' last will from a skill ticket, so I will try it for her. Kaiba is good with peak performance in this. Aster, idk except maybe bring it to find a way to abuse plasma.
Use lvl augmentation if you can, it can make perfumer add 2 cards instead of 2 when summoned by a lvl 8 channeler, you can bounce that channeler with cyber slash or a harpist while getting rid of one of your opponent's monsters
The skill should be easy to nerf without ki lli ng it: Everything the same but the lvl augmentation only lasts until your end phase OR only applies during the main phase you used it. Both work