I like this part of lemmy. You can easily toggle whether you want posts/communities from your instance or globally. And I agree that some of the communities are redundant but I've found that it is easy enough to follow similar communities so my feed is all content I like.

I view it as a benefit because it encourages a small world, tribal model which works better with human brains.

It's definitely different however, so I can see some friction if it's not what people are used to. Frankly I don't want one topic with thousands of comments, most of which won't get read.

I think one needs to transition away from the dopamine fueled high and focus more on what brings meaningful discussion and sharing of diverse opinions. With that said, I wouldn't be opposed to a feature that allows users to quickly jump to the same discussion on other instances or communities.

I'd be happy even if it was just Reddit's "other discussions" tab

A popular suggestion has been to implement the ability for communities across instances to 'subscribe' to eachother, which puts the networking of these communities in the hands of the moderators of that community.

I want that feature above all else.