In other words, the {-'e'} in a pronoun-as-copula “to be” sentence is not just a topic marker in Standard Klingon. It’s a necessary part of the pronoun-as-copula formula. So it’s probably not a good idea to treat it like it’s just a topic marker, and it’s very unlikely that {vIghro' tIQ'e' nov 'oH} and {nov 'oH vIghro' tIQ'e'} are equivalent expressions apart from a marked stylistic difference of word order.Except we're explicitly told otherwise in TKD:
puqpu' chaH qama'pu''e' As for the prisoners, they are children.
pa'DajDaq ghaHtaH la''e' As for the commander, he is in his quarters.The -'e' may be required, but it still indicates a topic.