I like the idea of opening on the last scene of the TFA and connecting that with the opening of the Last Jedi. My idea would be to rescore the music of when she sees him and have her walk up to him, then pull out the lightsaber when she’s closer, she holds it out, Luke looks at her (using a shot from TFA), and then he just walks past her. With the right editing and musical rescoring, it could be very powerful.
Man I love this idea, specially because I wasn’t a fan of the lightsaber discarding scene.