Adding a recharge port to the ASP kit is definitely doable, as
Jeff Vader did with his in this thread.
Though having it also be quick connect compatible as well would increase the Cram-Fu needed to install the electronics kit in smaller hilt designs (as the port needs two connectors, which while small, do take up a decent amount of room), especially of you still want to be able to slide the kit out the back of the saber.
Recharge ports were one of the many planned additions to ASP (along with crystal chambers), and the initial run was supposed to keep things simple for those unfamiliar with electronics to install.