I think how fragmented lemmy is hurts it. I enjoy Mastodon more, because it doesn't matter what server a person uses, you have but a single feed of all the people you follow.
But here on lemmy, every server has its own communities and might even be having the same conversations apart from each other. While reddit is a giant single space for each conversation.
If there was a way to unite feeds so that, for example, /c/gaming gave you posts from every community /c/gaming you are subscribed to or federated with (or /m/gaming for us mbin folks). I think we could really see a proper exodus from reddit as it becomes proper alternative.
and of course, the classic lemmy experience would remain for those that don't want to do that. Much like old.reddit remained strong in the face of the site remake.
EDIT: Maybe what we need instead is multi-reddits. Custom made aggregate feeds made by the user, so you have full control over your aggregated feed. And they don't need to have the same names in that case.