This is a good question. Let me give you a few pros and cons.
In terms of the pros, Julius Caesar showed that a monarchy was inevitable. The civil wars among the Romans was very costly and caused much pain among the Romans. In time, Caesar would be a transitional figure who would lead to the emperors of Rome.
Another positive point of Julius Caesar was that he was friendly towards some religious groups, such as the Jews. This is when he died, the Jews mourned the loss of a great patron.
In terms of negatives, Caesar showed that mililtary power in the end trumped all things. For example, he destroyed Pompey to become master over Rome.