Oddbean new post about login | logout What other stuff do you think is underdeveloped? Personally I think it's the file stuff. Probably based on something like blossom but with NextCloud like features. With a encrypted by default portalble file system tied to your nostr identity a lot of apps become possible.
I personally think that audio (nests, corny chat) and video (streaming, short/long videos) need our attention, glad to see people working on them. I'd also love to see efforts for creating gated (by payment or invitation) communities for learning, chatting about certain topics, and enabling more monetization models for creators.