These vector aerodrome charts as I see some of them in the UK are very helpfull, especially where there are no geo referenced airport diagrams available ( and the aerodrome layout is complex). What are the 'selected areas' and what are the plans to expand the covered areas? Sometimes navigating on a complex airport is more challenging than navigating from a to b in the air, so when this is SD-wide available, this will elaminate my doubt about adding Jepp VFR or PocketFMS (having much more geo referenced charts...).