In answer to the OP, yes you can have arrows on the AID, but they don't appear like on the old Mk7 - ie not in the MFD space between the clocks.
You need to toggle the AID mode into navigation and then the direction arrows appear in the middle of the speedo clock.
Hard to explain until you've seen it really, but that's how it works.
There are something like 5 different AID "views" each of which is a different set of info displayed in and around the rev counter and speedo. In the middle you still have the equivalent of the old MFD which can be used to display whatever you want - audio track, fuel range, telephone, you know, whatever.
I think AID is really good, but it feels very v1.0 and needs some work still IMHO.