Fly around non-radio without Txpdr. It means you dont have some nob of an Air Trafficer routing you all over the place for no reason (or maybe to make life easier for the commercial guys). Example. I flew past Boscombe Down a few months ago and requested MATZ crossing East to West. Given a FIS, squak etc. Not a lot happening at BD (I could see it, even though they were on UHF) and was told to route via Alderbury (a very insignificant place for those not local to Salisbury). After going about 20 miles out of my way, and just as I was about to go en-route, squaking 7000 etc etc, said controller then routes me direct to my destination.
Essex radar have never given me a crossing of the Stansted Zone in the last 10 years, apart from once, and then only because Stansted was my final destination! So I now just skirt the zone very carefully, and remain outside CAS, knowing that if I ask, the chances are i will not get a crossing clearance. Southampton, on the other hand, have always given me a crossing clearance.
As soon as ATCers realise that not all GA pilots are potential infringers, then maybe they might be tempted to give a better service......But then navigation standards have to get better, without blind reliance on the black box of the devil..