Also in terms of expansion i would really like it if you continued in the Historical Pan-German route. But this time with Hitler gone you could be more moderate to keep a possible alliance with Britain. For example, in Czechoslovakia only pursue the Sudetenland and prevent any invasion of the rest of the nation. Another good possibility could be that for the Danzing corridor you could negotiate with Poland for gaining German territory in exchange for an alliance and transit rights.
I can say something as native 'expert' on Czechoslovakian First Republic: for entirety of it's existence, it was controlled by liberal nationalists, whose relied, to more degree than Poland, on Anglo-French support. In same time, there were strong communist party and revolutionary elements, but they had zero influence in army and police, completely obedient to president and parliament.
From both cases, that's why Munich Agreement was accepted without revolution or military coup, despite public opinion, which expected epic fight at any cost.
My prediction what would happened: further rise of Czech nationalism ('Old Guard' in charge seriously hated monarchy and nobility more than anything else) and fascism (Gen. Gajda, 'Lion of Siberia' controlled local fascist party and only direct harsh actions of president prevented their epic rise). There was virtually no monarchist movement and support in late 1930s, although during Great War, Czech politicians widely discussed possibility of Romanov king. Of course, German Empire reborn in 1930 would probably boosted these before marginal voices.
In modern 'what if' documentary, though, House of Braganza was chosen as a compromise.
In any case, moderates would still pushed for some kind of compromise, and President Beneš's day in office are numbered for sure - same as all Francophiles and socialists around him.
Most likely, majority would backed highly influential Rudolf Beran (OTL prime minister after Munich), who had many contacts with industrial elites: basically, he thought, that cooperation with Germany is the only reasonable option: give Germans what they want (weapons, workers, resources), choose to be an ally while there is such a choice, and, perhaps, even profit from it - same as Hungary OTL did.
In this timeline, many more people will listen to him. However, if Germans want Czech cooperation, they must confirm borders as historical and legitimate first, or republic will go on rampage, which may even end in full alliance with USSR and communist France - borders are simply non-negoatiable in any direct German-Czech negoatiations. Period.
Subtle approach for the start would be best, like contacting cooperative right-wing politicians like Beran or ex-White czech and russian generals, General Staff was full of them (1. Army was under command of Gen. Sergei Wojciechovsky, once colonel of Russian imperial army).
EDIT: There was also
Paul Thummel, high-ranking
Abwehr officer, who worked for Czechoslovakia and provided many valuable informations. He was known as operative
A-54. He worked for money, since his personal life was let's say expensive. His intel proved to be mixture of truths and fabrications: he informed correctly about Wehrmacht or general activities of
Abwehr, but he seemingly refused to betray his colleagues directly: many 'agents' he exposed proved to be innocent, dead or captured already.