I would work with you on something Nostr related. However, all the ideas I have when I play them forward seem useless. I have yet to hit on any idea that is makes any sense.
The 1 time Nostr was more than social media to me was it allows me to keep in touch with a friend internationally without WhatsApp. It works amazingly well, just as good as WhatsApp at least for texting.
I liked your Cloud/calendar replacement idea. I would like to be less reliant on Google cloud.
For example, one worry I have is if saved Bitkey backup phrase is compromised on Google cloud. I would rather save it on a relay somewhere that I could retrieve with Npub.
For me right now Nostrs killer use case is simply as-is as a life enrichment tool. for example, finding new music totally enriched my life the last couple weeks. Before that it was more like life advice and philosophy.
And now some tech advice.
But I have no idea what to do beyond what Nostr can already do which is put humans in contact with one another in the cyberspace.
So yah back to where it started, no wiser, another minute down the drain. On this roller Coaster ride where the attendant isn't even a pretty face.