[seanc]

Not as such, but out of the box you get reword and fixup as first-class rebase macros. I use them all the time.

If you wanted to split a commit you'd still have to use a magit-assisted rebase.

So if magit added explicit 'history' support I just about wouldn't notice, it would mostly be under the hood.

[quibono]

100% agree, the fixup macro is amazing. It even fails gracefully when unable to commit for whatever reason.

The split one would be handy though.