Is it worth restarting ITR2?

I finished the levelled missions in ITR2 last summer / fall before the official release, and then lost my progress. How much content has been added in terms of gameplay? Not talking about features so much as missions, progressions, etc. I have a 9-month-old baby and my playing time is very limited, so it's only worth it to me if there's enough new content to really add to the experience