- It doesn’t seem sufficiently explored. When I tried to understand it, it felt like transaction trees keep growing and can’t be merged together.

- The WoS implementation reuses the same address. Anyone who pays you once can read your entire transaction history.

- I’m worried about centralization. Overall, I have the impression that it lacks a bit of honesty - it doesn’t have good documentation, yet it’s already in production in several applications that charge fees for it.

But these are more impressions than solid conclusions… I’ll need to study it more thoroughly.