I have gotten replacement windows on 2 houses and these were the solutions offered and I was never happy with the final product. It's tough to go from the clean look of hidden contacts, pay a lot of money for quality windows and then get an ugly wireless brick or some wired exposed kludge solution. The wired solution you offered with the tape gets more complicated when you change from a single hung to a double hung window. I understand your warranty concerns so you do what you have to do. I would ask that installers such as yourselves put pressure on the manufacturers to offer optional pre-wired windows with hidden factory sealed contacts. There should probably be a small service panel on one side where the wire junction can be serviced and tested. Thanks for the video.