Wouldn’t have Kaiser Wilhelm’s grandson have been a very young child in 1933? It would have required a Regent at the very least.
Actually, Prince Wilhelm, the eldest son of Wilhelm II‘s eldest son (they all had the same Christian name) was born in 1906 - on the Fourth of July, amusingly.
He was described as an intelligent and warm-hearted man, as well as an accomplished athlete- and the fact that he was a good orator would have helped him, too, just as the fact that he was rather easy on the eyes.
Probably he would have needed to forsake his marriage to Dorothea von Salviati (who was not of royal blood but of petty noble heritage), as, in those days, members of ruling houses were supposed to marry among themselves only.
His by one year younger brother, Prince Louis Ferdinand, might have been an excellent adviser - he was the intellectual in the family, with a doctorate in economics - and, if necessary, a good surrogate, too.
At least, his wife, Grand Princess Kira, was a cousin once removed of the last Czar of Russia 🙂
Prince Wilhelm was very popular among the people, too, although he didn’t ever hold any official position. When he was killed in action in France in 1940, a hundred thousand people followed his casket in Berlin. Hitler then forbade any members of the former Ruling Houses to serve in the military, for he was still afraid of monarchist sentiments within Germany.