As a developer, getting started writing a Nostr client can be a bit challenging. Nostr is supposed to be decentralized, connecting to whatever relays the user specifies. Weirdly enough, the user preferred relay lists lives on other relays. Which ones? You don't know. So even as Nostr users are supposed to maintain their own lists of preferred relays, a Nostr client app still needs to have some kind of dynamic/hardcoded list of relays to get that user preferred relay list. In addition, whatever list you start with, lists are dynamic. They come and go. Which means both as a Nostr developer and as a Nostr user, you need to do some upkeep to keep everything working properly over time. This is one area where Nostr could definitively improve. For all parties involved.