For all I know the Boxer should be a very decent APC and a worthy replacement for the aging Fuchs. If you want more armored protection, off road maneuverability (tracks) and more powerful armament you need an IFV instead of an APC and there's the Puma already in sight.
The Boxer is also produced by KMW and unlike EADS I have faith in the quality of KMW's vehicles

I for one think the field tests in Mazar will be a good opportunity to fix the last little issues before it is deployed widely to hot spots like Kunduz.