It worked quite well, not only did my SPQR game move back 2 full years in time, the client king of Rhegion spawned the very next turn. I did have to destroy and rebuild the government buildings of Taras though, as the ruler still wouldn't spawn... without a ruler some towns just need a lot of garrison troops, and happiness/order buildings in addition to a low tax rate. so, I'm happy for now with the Amici, within a generation I'd upgrade governments anyway.