Balance Sheet
I think it would be awesome to see a balance sheet added to the financial info available to players. Personally I think it would be helpful in calculating various accounting ratios as well as allowing for a better overview of your airline’s financial position besides simply the income statement. The first example that comes to my mind is the debt ratio which is used by the game to calculate an airline's credit score but as it stands right now it is difficult and very time consuming to accurately calculate the right numbers from the little information available that is spread out over various pages. Obviously there are tons of other uses for a balance sheet when it comes to helping a player make certain decisions and I think it would be nice to see all that information quickly in one place.
Cheers!