Serato doesn’t add a default cue label either so they come into Lexicon without text.
I don’t think I want to “fix” this because it would mean giving all cues without text (regardless of where they came from) a standard label like “Cue 1” etc. And other users will wonder why they suddenly have texts that they never added.
So I’m going to leave it as it is now. Serato doesn’t have default cue text so I think the expectation matches the reality as much as possible now.