"All" is all content on the fediverse, across all instances with which your home instance is federated. It will be similar for all instances, because most are federated with the big instances and those tend to have more posts and interaction.

If you only want to see the feed of communities on your local instance, you can just browse your "Local" feed.

I don't think changing the default behaviour of the All feed is wise, but adding a sorting option like Hot(Local) or something to the All feed to see what is trending in terms of votes from your local instance could be interesting for medium sized instances. But for any small or tiny instance this would be essentially worthless so it would have to be optional.

Because "All" is everything, from every instance? You can already do what you want with "Local."

That's what the local feed is for.
I'm constantly surprised by people who don't seem to understand what ALL means.

Because then it wouldn't be "all" any more.

You could do something like that, where instance admins choose what they believe is more relevant, but then it would be better to call it "featured" or "curated"...

The all feed is all federated instances. If you want a different one you would have to find one federated to different instances. And if it was tailored, it wouldn't be "all" now would it.

There should be another feed, besides subscribed, local and all, that shows the channels that are relevant to the instance.

This idea relates to custom collections: https://lemmy.world/post/26654286

Well it is a little different because it won't include instances your instance is defederated from.

But what you're wanting is essentially why subscriptions are there

That being said, an instance curated feed alongside the all feed and local would be a cool option.

Using your example, literature.cafe having an admin selected feed of communities relating to writing would be awesome.

But, there aren't actually many instances where that would be useful, since there aren't that many focused on specific subjects.

The all feed is there for everything federated, and that doesn't need to change. It's a big part of how and why the fediverse is so cool. So fucking with it is a bad idea. Adding in options is nice, but the lemmy development has a roadmap that's pretty focused on functionality and stability, so don't expect this kind of addition soon

You are local for the Local feed. Example for literature.cafe: https://literature.cafe/

There is indeed some plan to tweak the All feed, but it's usually quite light: https://lemmy.zip/post/33065677

How have you been here for a year and don't know you can sort your feed?

I agree, the all feed is commonly misunderstood to mean all of the Lemmyverse, but this is both a technical impossibility and also a false notion.

What the all feed actually means is all communities subscribed to by a member of your instance.

Especially on thematic, not too big, instances this can be quite interesting and definitely more useful that a bland feed of everything mixed together.

Obviously the bigger the instance, the more the all feed will tend to conform to a bland mix, and somewhat controversially a lot of instances are registered with a bot service that actively auto-subscribes each to other communities making the effect much worse.