Here's the thing. I'm a mod for a small-time community for a niche interest, !castles@lemm.ee I'm also on Mastodon, and was before my Reddit exodus. I follow #castles as well as a few other related topics on Matsodon, so I get quality toots, such as this: https://mastodon.scot/@McNige/110926238926867959, that I wish I could just crosspost over to my community. Currently, I have to repackage the toot, which isn't a huge problem, but currently I just drop them a note on Mastodon that their content has been posted elsewhere on the Fediverse. What would be nice is if people who comment on the Lemmy post also get fed into OP's toot. More sharing, more connection, more activity.
On the flip side, I've subscribed to @castles@lemm.ee on my Mastodon instance and, while it's good to be able to follow posts in feed form, it looks like ass: 
I realize I should try this with Pixelfed, but I haven't made that leap yet.
I don't know, am I thinking crazy here? I'd think we'd want everything in the Fediverse soup interoperable in a more seemless way. Is this a feature request or am I missing some way to do this better?
I can smell this comment
Victory?
U ok bud?
Just living rent free in your head, lil man. Go ahead and have your nap now. You must be tired after that big tantrum of downvote spam, and you gotta start early tomorrow if you're gonna keep up.
You tagged me in this thread… but you’re living “rent free in my head”?? I don’t think I’ve ever interacted with you personally outside of a weird DM you sent me a month ago.
Seriously man are you ok?
You decided to spam downvote multiple posts before you were banned from our forum. Then you continued to do so, after being blocked and banned, on my reasonable comments against racism, transphobia, and about law outside the forum (including one comment that was nothing but the text of the 14th amendment), proving yourself in the process to be a racist, a transphobe, and an absolutely idiotic fascist who doesn't realize that kbin lets everyone see what you downvote.
I feel it's my civic duty to call your dumbass out, as you're clearly an unhinged, vengeance driven stalker who's likely doing the same or worse to other users.
As to the reverse trolling, I'll know I'm out of your head when you stop spam downvoting (which is really a useless effort, as you're gonna need at least another 2k downvotes a week to keep up). Calling you out on your dumbass nazi self is just icing on the cake.
Wow you sound… hinged…
Du høres ut som en rabiat Raglefant. Jeg trenger en blodprøve.