Just floating a feature idea: In the past I’ve built simple SPARQL preprocessors that let you write a term’s rdfs:label as a single-quoted string anywhere that you would write the term’s IRI. The preprocessor looks for those single-quoted strings and replaces each one with a CURIE, resulting in a normal SPARQL query.
My versions have just used a lookup table to map labels to IRIs. Owlet is much fancier.