Sorry, I meant it as a joke. Clearly it didn’t land.
To give you a serious answer, I think that the point is in understanding that “All” will always be an unfiltered firehose. If the issue is that you are running out of content in the communities you subscribe and that represent your interest, then we need to find ways to increase the amount of content here instead of chasing another fix by going to “All”.
In a way, this is exactly something that the mirrored content from fediverser could also help, and also another reason that I don’t understand why people complain about “spam”. The content from alien.top mirrored is ending up at a community that you subscribe, it is far more likely for that content to be interesting to you than a random post from a community that you do not subscribe.
Re: “finding out new communities to follow”: that’s also part of the Fediverser Project. The idea is to build a crowdsourced map of Lemmy communities to be recommended as the alternative to any given subreddit.