From everything i've read on the forum it looks like if you have a 6mt and don't want to burn your clutch don't tune your car, it looks like the stock clutch can only handle about 300lb-ft of torque and every stage 1 tune out there puts you over that. It's that reason i'll be keeping mine on the stock tune because i drive a lease and even the jb1 will burn a clutch, so just bolt on's for me.
That brings up another question. When a car is inspected on lease return, does a dealer hook the car up to ODIS and do a scan? If so, the scan will show the dealer the owner flash tuned the car. Does VW require the scan to be sent to them to certify the car? If so, I don't think the car will be eligible for certification. And the owner of the car will need to pay for a new OEM flash tune or possibly a whole new ECU to return it to stock condition. Both of these items can only come from VW, and VW decides which is done. VW can easily say they don't know if anything else is compromised so they will only supply a new ECU. Or TCU, for that matter. I wouldn't be surprised to hear of owners needing to buy out their cars in the future. There are still some people who tune leased cars.