I think i understand what you mean. Though I fear that if the tool works that way, than other users would need those animation for whatever reason. So I prefer to include everything.
Another problem is that some weapons allow for more the one type of attack (the first sword, for instance, allows three)
That being said, the generator uses the key 'SPACE' in much the same way. It only performs the attacks that the equipped weapon allows. What attacks are allowed is set in the weapon settings file.
This way the weapons settings are defined once and you don't need to change anything else.
Hope it made some sense and that it applies to your use case.