The biggest challenge my primary opponent faced when we moved to Revised was that everything wasn’t quite where he thought it was. I had to tell him many times for about the first three games, “that doesn’t reach.” He also seemed to have big problems with the fact that there is an “inside” and “outside” sea zone at Japan instead of only one. It threw his logistics off for awhile.
Essentially though it isn’t that different, buy enough infantry and stick to your plan. I don’t have that many games of Classic under my belt but I find the revised game to be much more satisfying.