I've been thinking about this and if they did reboot the live action movies, I'd love for Krang to be the headliner for the bad guys. I like Shredder but he gets too much exposure and I think a 2003 spin on a set of movies would be fantastic with OG Shredder appearing after Krang's defeat. Besides it'd be just the greatest if we got that decapitation scene in live action. I also think it'd be a good chance to expand on the Krang and Utrom like have Krang's full name be Ch'rell Krang last of Krang Dynasty which could be a family of alien war criminals and for them to be a disgrace the Utrom species. This way Krang could be a mix of his 2003 and Rise versions steadily becoming more threatening and after OG Shedder appears he could go full Rise (but not having done so in the past to avoid gaining the attention of the Guardians and Utrom) to distinguish himself from Saki.