For a French series, I think it's a good beginning to a new era, it will open others ways to explore for the "french series industry" (yes by Netflix this time).
About the series it-self, it's quiet good, the script, trivia, camera shoots are good. Sometimes the dialogues are "weird" and I think even more when you understand French. About the actors, Magimel is good in this role and Depardieu is quite eaten by his past, we know almost everything about his films and there is no surprise about his playing. But all together have a sort of charm in the Frenchie way.
So I'll wait for the season 2.