I've been playing since Vanilla (again, I do so off and on.. it'll oftentimes be a year between plays) so I don't need a newbie tutorial on how to get the hang of the game. It's a strategy game and as such I want that data available to me in game. I like hard figures such as knowing what % of damage a particular unit is inflicting on another.
It's not a big deal as I'm familiar with outside resources, but I dislike having to go to those outside resources when I fire it up after a long hiatus... I feel like that that information should be available within the game itself. Perhaps I'm just weird, but it'd be a nice option. 