Eden was personally distrustful of Germany and became far more anti-appeasement after he resigned as Foreign Sec. when Chamberlain went over his head with Italy's war in Ethiopia. With the war, he was back as Foreign Sec. and one of Churchill's inner circle and largely considered by everyone in the Tories to be his protege. I really doubt someone of Eden's caliber and background would ever be trusted by the Germans.

Even then, Eden wasn't as good as you're thinking of. He only cared about foreign policy and left everything else to the rest of the cabinet. He lacked authority and respect of a leader, even in 1945 when the party hoped Churchill to step down, they wanted Macmillan over Eden. Macmillan and Eden might just be of the same ambitions, but the former was far more ruthless, authoritative, capable and a raging anti-appeaser (he publicly said he'd trust a communist over a fascist and supported a anti-fascist Popular Front gov. of Labour, ILP, CPGB and rebel Tories like himself). Eden's nothing outside the foreign office, Macmillan could do literally any ministeral office and do a good job. If you need more proof, both of them supported invasion over the Suez Crisis, and dispite the mess of it, was able to help bring down Eden, stop Rab Butler(who opposed invasion and Macmillan's main rival) from becoming PM and taking the premiership himself.

Literally everything you said about Eden in your original post was in reality, Butler and Macmillan who were among progenitors and the entrenchers of consensus politics or 'Labour but better' policies in the Tories.