For offline play I'd like to suggest spawnable/despawnable target dummies that can be set to despawn never or despawn on a player set threshold of damage dealt.
If it's not too difficult it would be nice to be able to give them a point to point space to move at a speed set by the player as well where they go from point A at a set speed and move to point B, despawn and repeat the path.
Or a fully recordable demo style ghost of your own movement to practice hitting dodging opponents.
