On the subject of colors, it would be nice if there could be a fairly wide range of them. Different colors (and/or different shades of the same color) have been used for each of the five major countries in the various A&A games, which is annoying in terms of consistency but useful for people who use the extra colors to represent additional countries as needed. So one suggestion would be to ensure that, for each of the five major countries, there are pieces available in at least one of the colors which have been used most extensively for them (and ideally in both of the top two colors, where applicable). My own preferences in those five cases would be:
USA - Green (medium)
UK - Tan (medium) or Beige (light)
USSR - Brown (dark or medium) or Maroon/purple
Germany - Grey (dark) or Black
Japan - Burt orange (dark) or Yellow/amber (medium)
It would also be good if these could be supplemented with other colors, to represent additional countries – preferably colors which are fairly distinct from the ones listed above. A color scheme that I like to use, for example, is blue for France, light grey for Italy, red for China (in the last case, by using the red Japanese pieces from A&A:Pacific) and white for neutral countries.
CWO Marc