Yes let's hope the new A3 will have more facilities via the DIS. I usually take my laptop on holiday and I change mine in the parking area whilst I'm wait to load onto the Shuttle train.
Before I purchased my VAG.COM cable my dealer used to do it for me for free. But then I have purchased my last seven cars from them.
I had a look at a Skoda Octavia Estate a couple of weeks ago and you can change the headlights using their DIS. It's funny but there are all sorts of things available on the Skoda that are not available on the A3 including electric memory seats and mirrors, door mirrors that automatically dip when you reverse, the option and space for a full size spar, a much better MFSW with far more controls for the radio. All these on a car costing much less than the A3 and at the moment Skoda are paying the VAT which gives an automatic 17.5% discount. I must admit I'm tempted by my A3 is only 19 months old.