The previous car I had was a Pasat with very similar multi link suspension system and the same issue happens with increasing camber as you lower the car. The real answer is adjustable length top arms
SPC Adjustable Upper Control Arms / Audi B8
They are however not cheap. As long as you don't go really low it's not so bad, indeed a bit of camber helps turn in.
The standard ride height of an S-line is obviously OK but as you lower the car beyond that you will get increasing levels of camber.
I used to have a graph that detailed camber change against drop for a Passat.
If you fit new suspension then make sure the tracking is good on the car as otherwise you could end up with tyre wear on the inside of the tread. Personally I will be fitting some Eibach 30mm springs on my SE. You have to spend a lot of money to get decent coilovers that will give you a good ride for many years.
Karl.