No Rhineland-coup => possibly no Austria-"reunification" (at least not at the time IOTL)
No Austria => most likely no Czechoslovakia-coup (at least not ath the time IOTL)
For the Rhineland-coup :
It was something not really intended by Hitler, at least at that point in time.
He was "convinced" to it by the military - that almost desperatly needed the Rhineland-pool of conscripts for its plans of Wehrmacht-build-up.
He was convinced to it by the conservative "old school", v.Neurath led foreign ministry - eager to remove the "last" of the ToV follow-ups as these diplomats understood them, the Locarno-Treaties. Also they told him, that Mussolini as well as the Entente-powers are momentarily tied up in the abessinian crisis and won't "care" much about it.
During the start of the occupation Hitler almost panicked and pissed his pants.
Beside the plans to occupay installations/garrisons inside the demilitarized zone, there were almost more elaborate plans to instantly withdraw these units, should the Entente-powers (France, Belgium, Britain) oppose with military force, aka mobilization.
Would the latter have occured, the troops wpuld have been removed immediatly, the Hitler-goverment would have apologized and some military (low level) commanders would have been sacked for their "unauthorized" actions.
Possibly/maybe Hitler would have "purged" the military earlier than IOTL (Blomberg-Fritsch affair 1938) and got full control of the Wehrmacht than IOTL. Possibly he might have "purged" the foreign ministry as well ITTL.
But no way he would be toppled in 1936.
Without the Rhineland, the further growth of the Wehrmacht will look VERY different.
Maybe lesser men but with more equipment ?
Probably we would see Hitler/Göring/Ribbentrop trying to pull something off with the western border with their kind of "personal" politics /see the german-polish non-aggression pact, the AGN) to finally get a "diplomatical" solution.
Something IMO not too far off a - possible - mark :
- Hitler has "sacked" the dreaded german military
- Hitler has actually withdrawn on threatening ... in a way and
- thereby "honored" treaties made after the ToV
given the "appeasement" stance and liking (esp in britain)
- why not finally bury, what`s actually left from the ToV ?
- and get a contracted new arrangement (as said : at this point Hitler would have actually "honored" the Locarno-treaties by withdrawing, might he even officially hate them or not)