What kind of saint could he become?
Surely not a religious saint when religiosity is declining and sainthood is suspect. Not a secular saint either, for he doesn't have the marks of 21st century secular sainthood: lack of ego, public spirit, concern for justice etc.
The only option I can see: his resistance to state power and unwillingness to escape his fate brings him close to Socrates, so perhaps there's that route. If only he had a great prose stylist as a student.
Of the various Catholic halomakers I know (and I don't many, being neither a Catholic nor a saint), only St. Francis comes across as a straightforward candidate for contemporary sainthood.
Even the very highest levels of human achievement are historically conditioned and might appear to later generations as idolatry.