This is what I am doing too and think it is the way to go.
You wouldn't catch me dead sorting by r/all on Reddit, but I have been doing so on kbin to just see what is out there and subbing to what is interesting. I also have been searching for various magazines/communities and subbing to a bunch of them since I don't know which one will take off. Eventually I have hope i'll have an active enough feed like I did on my homepage on Reddit, but I'm cool waiting it out and just seeing what sticks on the fediverse.