the more new technology is in a product, the higher the risk that there are teething issues. this risk is also reflected in the high starting prices of new DSLRs in form of reserves for unplanned issues. Leica surely encured high cost to fix the bugs on the M8.
I give Nikon the credit for being very proficient in what they are doing. now, I would not give that credit to some car manufacturers where I would also adopt your approach and wait.