1. No, but erm.. German forces were busy defending Germany from an allied invasion. Theres little point moving everything east of Berlin to just allow the Allies to occupy all of Germany. Well unless you really buy into the myth that Germany didn't really oppose the allies and was intent on surrendering as much as possible to them before the Soviets could arrive. Defending France is of far less concern compared to the western half of the Fatherland.
Still, I believe my point stands.
Imo, the Germans would anticipate a British invasion once their forces in the west are spread too thin.
2. Going for a territory grab? This isn't some computer game. Germany 'surrendering' doesn't suddenly mean the entire Nazi Empire turns Soviet Red. Britain (and France!) are at war with Germany. Upsetting the Soviets isn't going to be a major concern. Further more, the British are likely to make their move before Germany is actually defeated. A full on battle for Germany without the strategic bombing and the irritant of a western front would be a much more equal and thus protracted contest.
Actually, since the USA is probably not involved in the European war, I believe not upsetting the Soviets would be a major concern.
While the British would probably invade before the Reich is fully defeated, I don't really see the Germans pulling back almost all of their forces from the west until the very last minute.
Besides, as I mentioned before, I think the likelihood of an Italian front is rather large, given Churchill's obsession with the Soft Underbelly OTL; meaning less troops available for a landing in France.
3. I think they shall add all of Germany. Its not a question of 'satisfaction' its a question of what they can take. They are going to have their hands full eliminating people, deporting others and otherwise installing communist regimes.
It's not so much of a question of what they can take, as one of what they want to take.
I don't think Stalin would be too preoccupied with the capabilities of the NKVD in supressing any revolt in the conquered territories.
4. How exactly does that follow? Do you think the British and Americans liquidated communist resistance movements as they went? Its more likely that with less aid these groups accomplish less.
Because there would probably be a lot more sympathy for the communists, as they are the ones actually fighting the Germans, they are the ones who will probably liberate those resistance fighters' home country, and the British appear to have sat on their asses for several years.