Hi…,
Thank you very much for your valuable suggestions, which we shall consider.
As a past VATSIM user, I can relate to the need for fast access to Charts whilst controllers are on line 
Re geo-referenced charts as per my link above:
Maps are provided by our data supplier. We have little influence on whether they are supplied
geo-referenced or not, though in time we hope there will be more.
Taxi and parking stands charts are usually distorted and not drawn to scale, and hence can’t be
geo-referenced unfortunately. See also my post at ESGG “Moving map” - #5 by KaptenEk
Cheers
Ian