> How would you even pronounce wero as a native English speaker?

Thankfully, only about 2% of the EU population speaks English natively.

[0] https://webgate.ec.europa.eu/ebsm/api/public/deliverable/dow... Page 10

I heard the gimmick was euro (you-ro) -- wero (we-ro). Which leaves ayero and dayro.

I mean, who cares how you pronounce it? Each country will have its own variant, similar to how euro is pronounced differently in different places, and eventually one will become the English status quo