I REALLY wish the Re:Mind DLC would have added to and smoothed out the overall story and pacing of Kingdom Hearts III; explained the already present loose threads and plot holes; added additional dialogue, truly immersive and meaningful playable characters, story arcs, and worlds; and just overall improved upon the game by making a legitimate Kingdom Hearts III 2.0 Final Mix.
But instead of fixing the massive pacing issues and plot problems in Kingdom Hearts III; Nomura, Square Enix, and Disney simply decide to take the easy way out by only adding-on to the end game content by including the Oathkeeper and Oblivion Keyblades, adding a handful of short cut scenes, allowing you to briefly play as some of the additional characters in the scripted battles of the Battle for the Keyblade Graveyard, and by making Data everything. Want to know what the easiest and cheapest cop-out to horrible directing and story-boarding that basically left all the characters and main protagonist and antagonist dead is? -- Make them "data versions" and throw them in Data Scape battles. You're paying $29.99 for at minimum, 30 minutes of additional end-game content, and at maximum, 3 hours of additional end-game content. FYI - Half of Jason Dohring's (Terra's) dialogue lines sound like they were phoned-in and the voice acting of Aerith (Andrea Bowen) is still godawful.
The only thing I will commend them on is the Armored Xehanort and Yozora's fight scenes being phenomenally scripted, animated, and decently challenging. Even though it's highly apparent Nomura simply couldn't "let it go" and half-way through KH3's production, turned the entire game into a story leading up to the remake of his Final Fantasy verses 13 game that got scraped and rewritten. -- SPOILERS -- Yozora IS FF v 13's Noctis. The true secret ending scene of KH3 is a scene for scene replica of the original FFv13 tailor with the new Yozora character model in Noctis's place.