Are there any plans to add support for large files to Git? (Not as an extension)
Git has always supported large files! What it does not do is treat them specially, with different semantics, which is what git-lfs, git-annex, etc, do.
Of course, but large files don't work well in Git without using an external plugin you mentioned. And external plugins have other problems, e.g. I can't use them without setting up another server (can't use them in git-shell).
Right now I just use "--depth 1" often to prevent the download of the entire history. But it is not ideal.
Maybe not exactly what you're looking for, but I'm building a tool that's meant to be a companion to Git for large files[1]. The core concept is to track large files/directories in a separate content-addressed store and have Git track references to said files. To your "I can't use them without setting up another server" comment, I'm making use of rclone[2] to replicate the file store to any reputable storage service/platform. If you already use S3, for instance, just set up a new bucket.
I'm happy to answer questions and take any feedback.
[1]: https://github.com/kevin-hanselman/dud
[2]: https://rclone.org/