They have, however, announced a faithful remake of the original Seiken Densetsu (Final Fantasy Adventure NA or Mystic Quest in Europe) in Japan (as opposed to Sword of Mana which I think had as many downgrades as upgrades due to the shoehorning of said equipment ingredient system I don't like).

Each time they announce a new Mana game it's some radically different disaster (free to play mobile cash grab, RTS, single player linear adventure with resetting levels, dungeon crawler, etc). It's like they reinvented the wheel and replaced treasure with random ingredients and reduced magic to glorified special moves. I do not understand why they threw out the formula used by SD2(Secret of Mana) and SD3 on future games. I don't know enough about Romancing Saga to comment. Obviously they would have to fix the many bugs in the game of course, but a straight up official port would please me.

Seiken Densetsu 3 getting an official localization and perhaps even higher resolution sprites would be amazing.

Download seiken densetsu series