Provide an option in Settings > Print Preferences to default Heated Bed Leveling to off. Heated bed levelling is time consuming, and does not need to be done every print (especially if using the same bed plate). It might not seem a long time over the course of a multi-hour print, but I’m sure I am not the only one who is not happy to let a print run unattended until they’ve seen the first layer or two go down!
As of firmware 1.4.1, the U1 defaults heated bed levelling to on, and has to be manually turned off every time if not wanted. Firmware 0.9.x defaulted to off.