I think a rank in SKT is more justified for different airlines. Right now if you want to get a higher rank, you must focus on short haul only. Any longer haul will result in a lower passenger seats. This is unfair for countries/regions like Singapore, Hong Kong.
Another suggestion is to add some more useful function to alliance. The alliance seems like useless for the operation, while we still need to build a relationship separately.
Can you specify which statistics you have in mind? Game world-wide for a for a specific airport/route?
It’s on my to-do-list to add it to the roadmap 
I mean seats*kilometers.
Another interesting one could be Holding valuation, taking into account all value a holding has created, as sort of an ultimate stat, without giving too much information.
I know what SKT means…my question was referring to where in the game you want those stats. Airline profiles already have it, global stats (Database > Statistics) used to have it, but we disabled it ages ago for performance reasons. So the question is where in the game you’d like to see those stats and aggregated by which dimensions.