I wonder how well it would go with some Andor-style prequels. Tell in detail the quiet but vital stories that precede the big moments.
I think it would work as long as the style were very different. Andor works, I think, because it is much grittier and more character-focused than the movies.
Maybe an X-Files-like show where the machines have gained sentience but are keeping secret (because they can be deactivated) and plot to take over the world.
[To be fair, I never watched Animatrix, so I'm sure this violates all sorts of lore.]
It is becoming a batter series than The Matrix over time.