Yeah, the 2002 version laid a good foundation for how to reboot it. I'd rather the film be dead though than be done incorrectly. Making a He-Man & the Masters of the Universe film should not be treated as another excuse to dump on a beloved 80s properties, it should be seen, must be seen, as a chance to do things the mini-comics and previous cartoons couldn't do, to finally play out those storylines and destinies always hinted at in the cartoons & comics but never fulfilled due to the stupidity of those in power or just plain bad luck.
Look this is how it should be done -
Film 1 - basic origin story and introduction to the MOTU world. How the lazy & arrogant yet oddly likable Prince Adam discovers his destiny as He-Man, Defender of Eternia, bestowed upon him by the Sorceress of Castle Grayskull, the war with Skeletor, formerly Keldor, whose face was burned off by King Randor when he tried to kill Randor's wife Queen Marlena when she was nearing the end of her pregnancy, quick overview on the ancient history of Adam's ancestor King Grayskull and his war with King Hiss, establish allies & enemies on both sides, subtle hint of Hordak. And because there always has to be some blasphemous change from source material, Princess Adora, the fraternal twin sister who becomes She-Ra, should be there growing up on Eternia with her family instead of being kidnapped as an infant, simply because waiting until part 3 to introduce her and expect the audience to care about her would be nearly impossible to pull off. When He-Man/Adam asks the Sorceress (whom he notices bares a striking resemblance to Teela, and even mentions this to Man-At-Arms) about the second sword that was being held next to his own, she replies: "That sword has a destiny all its own."
Film 2 - the strain of a double life takes its toll on Adam as his secret undermines his relationships with friends and family alike; only his sister Adora suspects the truth, with Man-At-Arms and Orko being the only ones definitely in the know. Rather than resent his alter ego, Adam starts to drift away more and more from his 'real' life as the Prince of Eternia and becomes more and more lost within his other life as He-Man, as he only feels truly appreciated, happy and free in that form. Meanwhile his rough and tumble love interest Teela is badly injured in a fight with Skeletor's thugs while defending Castle Grayskull and is nursed back to health by the mysterious Sorceress of Grayskull, who she discovers is her mother (real name Teela'Na). While continuing his plot(s) to take over Eternia, Skeletor discovers that Adam & He-Man are one and the same, and tries to kill him in his weaker form, but instead kills Randor in a fierce duel when the King of Eternia intervenes to save his son. Grief stricken and guilt ridden, Adam channels his rage into He-Man and wreaks a terrible vengeance on Skeletor and his thugs, leaving most of them dead or crippled, and ending with a chilling scene of He-Man killing Skeletor by crushing his skull with his bare hands and then tossing his corpse into the river of lava that flows from Snake Mountain. His purpose seemingly complete, He-Man then goes to Grayskull to relinquish the Sword of Power and resume his life as Adam, but en route to the Castle, he is detoured by the arrival of Zodak, who warns him of the invasion of... Hordak! Last shot before the credits roll is the Horde hovering over Eternia, and a close up of Hordak in his chair.
Film 3 - Hordak's invasion of Eternia. The Power Sword is destroyed and the shards of the blade scattered, cutting Adam off from the power of He-Man. Princess Adora is abducted & brainwashed into helping overthrow the primary Eternian army and scattering the Heroic Masters (Man-At-Arms, Teela, Startos, Man-E-Faces, Meckaneck, Buzz-Off, Fisto, Ram-Man and yes even Orko). Evil-Lynn forms an alliance with Hordak and then steals the power of Castle Grayskull for herself, transforming herself into a Dark Sorceress, and making the true but now powerless Sorceress her prisoner. Risking life and limb, the Masters break into the Castle, engaging in a desperate battle with Dark Sorceress-Evil-Lynn; Teela manages to free her mother and, together, they succeed in taking the power back from Evil-Lynn, but mother-Sorceress is now too weak to take the power back into herself, and so the power goes to Teela, making her the new Sorceress of Grayskull. Mother and Daughter reconcile and set about trying to figure out how to reconnect Adam with the power of He-Man; the solution they hit upon is to permanently fuse the power of Grayskull into Adam, seemingly trapping him in the body of He-Man forever, which he agrees to in order to save Eternia. Restored, He-Man leads the Masters in rescuing his sister and undoing the brainwashing done to her; seeking redemption, Adora accepts the other sword seen briefly in film 1 and becomes She-Ra. From there, He-Man, She-Ra, & the Masters defeat Hordak, and the film ends with the heroes rebuilding Eternia.
Just my two cents.