Just to address some of these points, not all of them are bugs, just lack of feature at the moment.
There is no difference between concrete or asphalt, purely to give player aesthetic choice right now.
The taxiway suggestion you’ve made would require a significant overhaul of pathfinding and it’s been discussed quite a lot in the testing branch, so I think that would come later on if it did.
And I don’t think you’re supposed to be able to build sidewalks under a lamp? Not sure about that one.
I don’t think they’ve yet added functionality to information deals other than it existing, so that feature is just missing.