A restored Habsburg state confronting Hitler

What if Austria, Hungary, Czechoslovakia, and Yugoslavia restored the Habsburg Empire in 1930?

Germany would face a much stronger regional state, making alliance more plausible and coercive moves such as Anschluss and the Sudetenland crisis much riskier.

The question assumes that Austria, Hungary, Czechoslovakia, and Yugoslavia reunite under Otto von Habsburg in 1930, repair their economy, and prevent internal conflict. Under those conditions, Hitler would face a much larger state with greater defensive depth. He might seek an alliance, although the answer leaves open another gamble on Anschluss. Demands for the Sudetenland would likewise be harder to enforce. A Habsburg state with a substantial Austrian German population would also complicate the claim that those Germans needed rescue from minority oppression. The outcome depends on the unity and economic recovery granted by the question.