A low euro is good for German exports, which is one bright spot. However, overall the German business world is disappointed.
Funnily enough, a Grand Coalition under Schröder with the CDU as junior partners might be quite popular. In all polls, Schröder was consistently the preferred Chancellor compared to Merkel by a very wide margin, however the red-green policies were perceived as a failure. If Schröder now implements changes (say, with a CDU finance minister and/or economics minister), the necessary reforms could go through after all!
This was my idea of having Merkel cede the Chancellorship to him but force him to hold to reform policies. Good for the country, bad for the SPD. Once polling indicates enough support has drifted away from them to the more radical left parties, pull out of the coalition and let him drown.
It shouldn't take long.