> Also as an app developer I might prefer using open source standard and protocol rather than 3rd party solution like Stripe (or some other closed integration).

I see, you mean that if they want to provide custodial services, they can use this open source payment/account software. What applications do you imagine would benefit from ecash mints over another open source payment/account software that uses a protocol like lnbits?

k00b

lightning

Ecash on Bitcoin - Gandlaf thoughts on ecash, after working on cashu for 2 years

supratic

I just gave it as an visual example. Other app developers might not be constrained by legal reasons when it comes to transferring out. 

Also as an app developer I might prefer using open source standard and protocol rather than 3rd party solution like Stripe (or some other closed integration).

In this vision each app would be a small bank for its users and for their purchases.