No Grand Empire for one. It lasted, without interruption, all the way up to 1888, and only when Napoleon IV decided to abdicate due to his failing health.....then came the Second Republic, and it's failure in 1907, which, along with the crisis in Poland, led to WWI....and France's humiliation for the next 25 years until WWII broke out...which ruined France yet again(though they were on the winning side this time), and only within the past 25 years has the country recovered from WWII.
Honestly, I think France might've been better off if Napoleon had lost the Wars......