I love Macadamia! I'll take a deeper look at their information architecture. My biggest concern with using "mint" as an action to create ecash is how the word can be confused with an ecash mint. I'd also like to see how users react to 4 options. It makes sense to me ,but I worry about less ecash fluent users.
Discussion
I love the minimal ux, different language use to get used to
i do like that those distinctions are top order and remove the secondary choices you were trying to resolve
perhaps something like:
add
send
receive
pay lightning