Yea I would take a new FF in octopath styleUh, you're looking at a 480p game made with what would now be considered extremely crude assets. That's why they redid the models.
If you want the best Final Fantasy to be a 3DS game then yeah, two years is doable. If you want a modern 4K equivalent of the PS1 games, you're going to be waiting a lot longer. The games you're looking for are Bravely Default or Octopath. The FF style you're asking for isn't coming back. It's just not feasible.
And yeah IX and X were different teams, no point comparing release dates there.
I haven't liked a single one of the 3D FFs