In Phoenix they solve the low value wallet problem with JIT/zero conf. I'm curious how Spark compares to that solution. Phoenixd also handles low sat payments with a custodial credit system so maybe t...
Phoenix refuses first-receives under a threshold and generally has relatively high fees due to liquidity allocation and on-chain costs. Graduated wallets allow the LSP to allocate substantially less liquidity and allow the first receive to be as low as a zap. It’s a much better UX if you get all the pieces working.