Ben Jonson's Sejanus His Fall - Is there not something more, than to be Caesar?

After triumphantly beating up John Marston, Ben Jonson indulged in some Shakespeare envy and wrote a history play, or perhaps a tragedy, Sejanus His Fall (1603), about the soldier who rose to rule the Roman empire, for a few years, under dissolute Emperor Tiberius, before overreaching and being crushed by the next sociopath in line. I found Sejanus a little dull when I last read it, long ago, and…