Philosophy for building Farcaster: pragmatic defaults are the way to 1000x qDAU growth. Allow people to opt out of defaults via clients.

what are some examples we have so far? 
i know the recovery address is one.

Seems like a good strategy to me: start with solid first principle primitives and allow anyone to fork off of that whenever they feel their needs are not optimally being met

Good design takes away a lot of unnecessary decisions from the user

How do I dev frames on a testnet? Warpcaster is not open source?