Are there ways to manage lists of such? For example, on the former platform that doesn't deserve a call out, you can do "me_irl+meirl" and aggregate both into one feed. This makes reading the (albeit potentially cross posted) content in a unified feed much easier.

Another similar point I'm having a hard time getting over is that with a centralized platform, it is easy to go to "Subject A", and see everything on that subject. However, now I need to see "Subject A@lemmy.world", "Subject A@lemmy.ml", "Subject A@someother.instance"... Yes, I could subscribe to them all, but this ultimately end up creating a noisy home feed with also "Subject B@lemmy.world", "Subject B@lemmy.ml", "Subject C@lemmy.world", "Subject D@lemmy.ca", ... etc. all baked into one feed, as opposed to just something focused on "Subject A".

Lastly, discoverability leaves a lot of room for desire. Today, I'm fairly new to Lemmy, I am actively seeking out communities that I might be interested in, across multiple popular instances, and hoping that federation is enabled between the two instances. Tomorrow, I'd find that I'm subscribed to too many (see the noisy main feed issue above), and I'd remove a bunch. Next week, am I likely to go to the Join Lemmy directory to find new instances, and add "duplicate" communities from newly popular instances? I think not.

I think the long term survival of the platform (to expand beyond just us tech nerds that hate the former platform) will depend a lot on streamlining this workflow to make content discovery much more consistent. Even a simple option where a pseudo "!Community@" (with no instance) feed that aggregates all the "!Community" regardless of instance that you've subscribed to, might go a long way.