Content discovery is crucial but I have found the deeper issue is relay discovery. It's easy to think of it this way- you must know where content is located in order to search for it. I think the ecosystem as a whole is still levelling up in this regard. Basically all clients are still perfecting the relay discovery aspects. Some devs can focus on interesting methods of content discovery, but those are mostly "big daddy clients" like you said.

For small clients, it's more of a nightmare. Jumble.social is a good example of a new desktop/web client that is doing relay management right. But it's new- so relay discovery and content discovery are both basically non-existent.

I think your skills would be best dedicated to working with someone (like me, actually) who is driven to increase awareness of the development ecosystem around Nostr. There are lots of hurdles for people to learn if they want to build objectively "good" clients.

This is all to say, content discovery is actually kind of difficult right now. But I think clients who put relay management and discovery on the forefront are making the most headway.

Unfortunately I don't believe this is very representative of iOS clients. NoteDeck will likely do it right, but no telling when.

Flotilla for Android is finally breaching new heights for this ecosystem. But, there is not too many examples that I can give. Amethyst and Flotilla are peak Nostr imo. If I had an iPhone I would cry.