I cannot understand why a new TV would need calibration.
Old thread, but this appears to still be an issue. You are right, a new TV via HDMI should not need calibration.
In my case I am using the composite out on a pi3. On many TVs the composite signal is automatically overscanned, there is no one to one pixel option. I am going one step further and sending that composite video signal into an RF modulator to send the RF channel 3 signal to every TV set in our house. Once the video starts playing, it is generally not an issue as there is usually no critical information at the edge of the screen. For the Kodi GUI, there is much goodness at the edge of the screen.
Hope that helps,
Tim