Would the Omega-class destroyers from Babylon 5 count as battlecruisers?
Short answerThey are cruisers, but their balanced design does not make them specialized enough to be battlecruisers.
NotesThe fictional Omega class fits the cruiser family but stops short of the battlecruiser category. Its capabilities are too balanced for that more specialized label. A powerful or large cruiser does not become a battlecruiser merely because its fictional navy calls it a destroyer. The design's functional balance matters more than its formal screen label.