Would Sejanus Have Been Better Than Caligula?
As you all know both Sejanus and Caligula have terrible reputations. It is a matter of debate if this is deserved or due to biased source material. Whether they were both all evil or that Sejanus' was a capable administrator and Caligula a man of the people....
So lets imagine a scenario where everything goes according to Sejanus' plans. He never falls from power, marries Livilla and Tiberius never turns on him. Caligula is eliminated along with the rest of his brothers. Tiberius then dies and is succeeded by his grandson Gemellus with Sejanus as regent. I don't think Sejanus would of been able to succeed Tiberius directly, being from the equestrian class, so this is probably his best bet for power.
Would this have been a better development than OTL? Or would Sejanus rule have been just as bad? One positive I see in Sejanus/Gemellus is they are less likely to blow Tiberius immense fortune.