Depends on whether they could pull their weight. None would be really that great on their own, while Germany would need to absorb Austria, which it didn't want to do. Of course post-WW1 IOTL when discussions about banning Austro-German unification were reignited in the 1930 Austro-German customs pact idea, the a French diplomat said to a German banker it would be a disaster for France, because it would mean 40 more German divisions; the German bank replied: and better yet, 1 general staff! Apparently the Frenchman was not amused. Probably in the end it would not be a bad thing to have Anschluss, but the problem is there would be no guarantee that all successor states would be pro-German, able to be controlled, or that the economic zone that was A-H would have any successor in the patchwork of successor states. Plus even a controlled demolition would require major commitments of German troops. The Czechs would be a handful to deal with on their own and the Catholics and Socialists in Austria would not be warmly welcomed by Berlin, nor vice versa.