Thanks for the suggestions. Here is a screenshot to show my problem. I have just captured a city, and I mouse-over the city to remind myself what is there. I have several heroes and I have just captured several new heroes.
Next to Gao Shun, for example, I can see he is A at something and C at something. Without a magnifying glass, I literally cannot tell what. On the other hand, when I look at the Cheng Pu core troop, I can easily see he has Combat I and City Attack III. These icons are easily distinguishable.
I agree that if I note down all four of the leader names on paper, and then go to the heroes screen you mentioned, I can scroll through the long list and find their stats, then write them down on paper, and come back to the main screen. However, that is a little painful.
Is it possible to use more colors, for example? Naval = blue, melee = red, mounted = green, archer = grey (clouds), siege = yellow (uh .. no reason)? Or perhaps to make icons similar to the combat 1,2,3,4,5 sequence which directly show the level, without needing another letter?
In the same screenshot, you can see my second problem. The heroes Lu Bu, Gao Shun and Zhang Liao are "unlegionized", that is, they are not part of any legion. So their letter ratings show up. However, I also have two heroes who are part of legions; He Qi and Cheng Fu. I can see the ratings of their core troops, but I cannot see their letter ratings. The only way to know their letter ratings is to unlegionize them so they show up as plain heroes, or else again, note down the names and look them up in the hero info screen. This problem is a little harder to solve, because we need to see both the hero ratings and the individual troop promotions. I do not have a good suggestion for this, except obviously to show both the levels and the promotions. But displaying all those icons may be a little long.
What I am trying to do when I look at this screen is to decide, for example, which leaders I should reinforce. I have some troops coming in one or two turns. I can either add them to He Qi's legion, or maybe the new heroes are better than him. There is no convenient way for me to compare multiple leaders with the current information.
Since the hero levels are such a critical part of play, I think it is important to display this information conveniently.