If the OP is being "relocated" to Germany that implies that the OP's employer, possibly the US military, is behind this move so he or she won't have to worry about shipping costs.
The EVSE is definitely going to be an issue. A non-upgraded stock one is NOT going to be compatible with Europe's 230 volt 50 Hz electricity. The OP may want to contact EVSE Upgrade to see if their units will work in Europe with a plug adapter, or if a different cable is needed.
Switching the displays to metric is just a matter of a push of a button. The AM/FM radio will work but many European radio stations are on the .05 (like 101.75) whereas ours are every .2 so there will be some radio stations you will not be able to pick up. Many European radio stations are also digital now and you won't be able to pick those up. XM of course will not work.
If the OP has an SV or SL, another thing that will definitely not work is CarWings; I don't know if anybody who has imported a U.S. Leaf to Europe was able to successfully swap out the AT&T SIM card for a local one. Swapping out the GPS data card may be an issue as well.
Blue Ocean 2012 Leaf SV, lost that 1st bar on 11/21/2015 at 26,435 miles.
Lease returned on 12/23/2015. Final LeafStat figures: 225 Gids, 17.44 kWH, SOC 91.89%, SOH 82.36%, 69.49% HX, 54.57 Ahr, battery temp 61.8 F
Now driving a 2015 VW eGolf SEL