Skill tree gems

I think I suggested this probably years ago when I first got into Early Access, but I was reminded of it again with the recent update adding gems. Sure, this comes straight from Path of Exile, and I think Diablo 4 does it too, but since we have gems now, it might be cool to add some passive skill tree enhancement nodes that are open spots for gems.

Like you could have...

'Enhancement' This could go on something like Battle Heal, which increases its effect from 1% per Heal, to 1% per AND 5% of maximum stamina.
'Cost reduction' Which could go on things like Blink, reducing the current stamina cost to 15 down from 10.

Etc, etc. :)

Sure, the same thing could be done just by adding more passive nodes (honestly I think all areas need about 20% more because it kind of forces you to split focus with the current options), but by changing it to gems that gives players something to find in the world, whereas passive points are just unlocked as you level up.