I've been thinking a bit about this post regarding #Mastodon's responsibility to be compatible with the #threadiverse (#ActivityPub thread aggregators like #Lemmy & #Kbin). Right now, a thread from Lemmy or Kbin usually federates to Mastodon with truncated text and a link to the actual thread. However, many want Mastodon to be more compatible with threads so that the people over on Mastodon interact with the threadiverse more.
I was initially in agreement as a Kbin user. But having given it some thought, I think this is an unwise approach that'll only serve to overcomplicate platforms on the #fediverse. Yes, people on Mastodon should promote other parts of the fediverse (and vice versa), but complete interoperability shouldn't be expected of every platform.
As much as many would like it, you can't have long-form video from PeerTube, images from Pixelfed, threads from Kbin, blogs from Writefreely, etc. all neatly fit in a microblog feed. These are different formats made for different platforms, and the people making them are expecting them to be interacted with in completely different ways. When someone makes a thread in a Lemmy community, they're probably expecting that the people who are going to see and interact with the thread are people that want to see threads and are thus on a Lemmy instance (or another thread aggregator). If someone from Mastodon were to interact with it as if it were a microblog post, there'd be a big mismatch. People interact with microblogs differently than they do with threads — that's why they're separate to begin with. You don't see everyone on Twitter also wanting to use to Reddit because people who want microblogs don't necessarily want Reddit-style threads, and vice versa.
The other option, then, is to separate these different formats into different feeds or otherwise make them clearly distinct from one another. Kbin does this by separating threads and microblog posts into two tabs. While you can view both in the "All Content" tab if you'd like, they're styled differently enough that it's very clear when you're looking at a thread and when you're looking at a microblog post. This distinction lets users treat threads like threads and microblog posts like microblog posts, which is really helpful since the two formats serve different purposes and have different audiences. This option — clear distinction — is a great way to solve the conundrum I've been talking about… if your platform is meant for viewing all these different kinds of content to begin with.
And that's what it really comes down to imo. Mastodon is a platform for microblogging. Most people go to Mastodon because they want a Twitter alternative, not a Twitter alternative that's also an Instagram alternative and a Reddit alternative and a YouTube alternative. Even if you put these different content types in separate tabs, it would inevitably make things seem more confusing and thus raise the barrier of entry. Add a Videos tab to Mastodon to view stuff on PeerTube, and people are inevitably going to go, "Wait, what's this? Is this like YouTube? I thought this was just a Twitter alternative! This all seems too complicated," even if you tell them to ignore it.
It's probably best to leave Mastodon as it is: a microblogging platform that has some limited federation with other formats. The way Kbin threads currently display on Mastodon is fine. In fact, when I post a Kbin thread, I'm expecting it to be viewed via a thread aggregator. If people on Mastodon were part of the target audience, I would've made a microblog post.
Now, if you want to make something that lets you view everything on the fediverse via different tabs, feel free. As aforementioned, Kbin supports both threads and microblogs, though it comes with some challenges (e.g., trying to fit magazine-less microblog posts into Kbin's magazine system). However, this doesn't mean every platform on the fediverse needs to seamlessly incorporate everything else. I'd love people on Mastodon to promote and even try out Lemmy & Kbin more, but that doesn't mean Mastodon needs to also become a thread aggregator.