Multi-Person Compounding

[Trusk'our he/him]

This isn't really super important or a crazy theory or anything, just something I thought cool. 

If a Full Feruchemist were to blank a Metalmind of theirs, they could give it to a Misting of the correlating Allomantic power, and the Misting could compound the Investiture and store it for the Feruchemist via an Unsealed Metalmind. 

So basically, just another way to Compound, but with only a Full Feruchemist and one or more Mistings (or Mistborn), rather than Hemalurgic use or a Fullborn doing it on their own.

[That1Cellist he/him]

I like this, and I like even more that I don't see an obvious problem with it.

[Halyo_Alex he/him]

That makes sense to me.