This too! Though I'm not sure if it will happen or not since Sword of Mana exists.
Sword of Mana is not Final Fantasy Adventure. Even their Japanese names makes it clear:
Sword of Mana = Shin'yaku: Seiken Densetsu (A New Testament: The Legend of the Sacred Sword)
Final Fantasy Adventure = Seiken Densetsu: Final Fantasy Gaiden (The Legend of the Sacred Sword: Final Fantasy Side Story)
Adventures of Mana is however a more 1:1 Remake of Final Fantasy Adventure, however it was only on iPhone, Android and PS Vita.
Speaking of, yeah, there was a 1:1 remake of Final Fantasy Adventure that was released on phones, and that could be used for reference. Example:
Blast, I came here to suggest something and actually forgot to. Anyways, idea: Double Dragon hack that replaces the art style with River City Ransom (with Andy & Randy (Ryuichi & Ryuji) being the main characters). And by default for Double Dragon III have it so 1P mode uses the intro of 2P mode and allows both characters to be usable from the get go.