So far my experience with Mastodon has been that local timelines are great, but take multiple accounts, and the federated timeline is... not good, no matter what instance I'm on.

I think my ideal experience would be a way to merge multiple timelines into a personal curated federated timeline. What's the fediverse equivalent of a pocket dimensions?

@restlesshead Yeah, an interface that merges your follow lists from multiple instances and merges the local timelines from multiple instances, and replies/boosts/favs based on which account sees a given toot would be ideal.
@restlesshead Yeah, I've been thinking that I'd like to see the posts of everyone my follows, follow. Not every post of everyone who is slightly near to them.