I second all the positive comments above and would like to thank all the people who have been involved in creating this. As a Swiss guy I had a natural inclination to fly over CH but with those changes and with the R22 it has become even better.
As Majick is pointing out creating some PO in "large" and even smaller cities would certainly bring it to the next level, but beside requiring the adequate knowledge in 3D graphics building (which I don't have) it might be a lot of work as well.
One point that might possibly be fixed is that highways/freeways in Switzerland are not illuminated - besides small portions within some cities. Would it thus be possible to remove the lights along the highways to make night flying more realistic. BTW the same holds true for most of the roads outside of towns but this may be more difficult to achieve with a small fix