Could there be someone with the genius of Mahavira in today's world?

According to Osho, enlightened genius never stops appearing; traditions stop recognizing it. When a lineage declares itself complete (like the Jains fixing twenty-four tirthankaras), the next awakened one simply becomes the first of a new series—Buddha would have been the twenty-fifth had the doors stayed open. So yes, someone of Mahavira’s stature can emerge today, though orthodoxy may not admit them.