I'd do a 2001movie, probably live action. (It worked for Ironman...)
It would be a split arc between the Toa and the chroniclers company, following both groups. It'd end with the battle with Makuta, but instead if him morphing straight into his shadow limb form, I'd have him morph into his 03 Titan form with slenderman type things coming off his back. (This way, if there are sequels, the audience recognizes Makuta)
It'd end with a teaser for the Bohrok awakening, and the next movie would be the Bohrok/Bohrok Kal saga.