I guess Napoleon III will have to wait until II is gone.
In OTL N. III became Emperor in 1852, after having been elected President in 1848. AFAIK his landslide victory in 1848 was not at least due to him being the legitemate Bonaparte heir.
So in this ATL the Second Empire is less likely and thus perhaps also the disastrous French-German war of 1870-71 - it would be difficult to act diplomatically that stupid one more time.
If so the unification of Germany is likely to be later and/or of a looser character. That is next likely to make WWI/II much different from what we know - we might not recognise the world by 2008.
Regards
Steffen Redbeard