Great question and great answers! 

On top of what Stelios said: 

Getting the right team has been a big challenge, but also the most exciting one. Once you get it right it's so rewarding. Lot's of learnings here.

geyserfund

Geyser AMA 🙌 😎

I'd say keeping the platform fully non-custodial while maintaining good UX is pretty high up there. But it's also been fun working around this challenge and discovering new payment flows.

For example, making use of HODL invoices to verify payments sent to third party lightning address providers. That way creators can "connect" their favourite wallet and receive funds straight into it.