Lemmy Plugins and Userscripts

I don't have much scripting experience. Would it be possible to to add a button on each post to block a community without having to open it? Maybe hide it under the breadcrumbs so you don't accidentally block something you don't want to.

Edit: Also, is it possible to change post links to always open in a new tab when you click them?

I would love a script that enables infinite scrolling like RES.

I'd like to see something to identify the same post cross-posted to several communities. For example, it could look to see if the OP, title of post, and source (linked URL, or with images, maybe the filename or size of the image) match other posts exactly and then collapse the post if so (rather than suppressing it outright in case you want to open it to interact with the comments, etc.).

If it could have the option to set a preferred community/instance (either your local instance, a specific community, or the first community with the post if you don't have a preference), that would also be wonderful.

Thank you!

ETA changed part about identifying images in the first paragraph

A way to expand all images when using old.reddit.compact? I mean similar to RES in old reddit

1. ~~Looks like we can block users, but it would be helpful to be able to block communities (local and remote).~~ I think I figured this one out. Go to the community itself and there's a block button.
2. I was watching posts and they just started scrolling, I am assuming as the server synced up with another node. Anyway we could get a button to "Pause" our screen updates. I kind of like that they just scroll, but sometimes I would like to just pause it.

I think a "never ending Lemmy" similar to the "never ending Reddit" feature in RES would be appreciated by many people.

A script to open all external links as well as posts in a new tab, please!

It would be great if a post links to a mp4, be able to play it inline like in RES.