SETH ROLLINS
First of all, I completely understand the reasoning behind Rollins using the Pedigree. When the WWE banned the curb stomp, Rollins was rolling with The Authority and was one of the top guys on the roster. So, there was a need to have him transition into a new finisher as easy as possible. With Triple H being Seth’s unofficial mentor at the time, it made perfect sense to start having Rollins use the Pedigree.
Over time, storylines have changed and so have allegiances. While Seth and Trips aren't currently feuding, it's still time to give Rollins his own finisher. Sure, The Pedigree is a great move, but it's not Seth’s maneuver. I believe having Seth go with a new finishing move would be one step towards him cementing more of a legacy of his own.
While Seth was in developmental, he used a finisher he called the "Avada Kedavra," which was a highly impactful superkick to a kneeling, or seated opponent. This could be an option, but the options are unlimited.