Once I was in Diplomacy game with two experienced players, one intermediate (me), and four people who had never played the game before.
As it were, the two best players drew England and Turkey, and ran all over the board. Two of the new ones ended up with Italy and Austria-Hungary. "Italy," in particular complained, "I didn't know what I was doing the whole game." Meaning he wasn't about to play it again.
England, France, Russia, and Turkey are relatively easy to play because they are in the corners of the board. Germany, Austria, and Italy are much harder because they are in the center, and more easily surrounded.
If I had it to do again, I would have had the four newbies draw for the "corner" countries, and the three veterans draw for the three "center" countries. Would such a plan have made it a better, more balanced, game? And more fun for the newcomers?