This is a feature that would need further improvement and possible rework for how the tag groups would work but it’s superiority makes it a point of consideration.
Instead of separating the tag sequences with empty tag (like I brought up here: Tag Sequences (Formed by ligning them next to each other)) tag sequences could be operated by choosing them.
Image 1: By choosing the base attack animation with another sequence we can create a different variatons of one animation by exporting the chosen sequences.
You could play through these sequences with another play mode “Play through chosen tag sequences”.