Thanks for playing and the video. I'm pretty sure the equipment screen shows which equipments are passive or active thought I think some sort of visual queue is in order during the hunt. About the 'z' control, what other bind would you suggest?
No idea about the equipment screen. I just used whatever was default. The right arrow was the boost, but the solar panel next to it looks like an active ability as well, since there is no visual distinction. Compare that to abilities on cooldown which are greyed out.
Having "Y" as an additional key can work. Not sure if that would cover all the different keyboard layouts. 1234 as ATK1, ATK2, AB1, AB2 can also work as an additional set. Or simply X.
Personally, I don't like ZXCV as main input, as they're quite close to space (weird hand position) and easy to mix up without some sort of anchor (like the knob on the F key or the default hand position when the pinky rests on Shift). Rebinding is king.