SquareEnix : Please remake FFXI on XIV's engine.

[Enkidoh]

If you don't believe that code from 1.0 still exists in modern 14 that's laughable. It's more of a matter of how much modern 14 is affected by legacy code and it's all backend stuff most likely. You can't build a fresh new MMO in a year and some change.

You can find very old Windows code in Windows 10 if you know where to look.

Starfield most likely has Morrowind code in it somewhere due to the Creation Engine being a Gamebryo derivative.

But I digress.

Except the game was built from the ground up on an entirely new engine and doesn't use 1.0 code at all, (and that's straight from Yoshi himself too who stated that it does not feature 1.0 code at all, who seemed to be getting a bit annoyed at the constant claims it was) - 1.0 used the same engine FFXIII and it's ilk ran on, the infamous Crystal Tools, that was useful for rendering pretty real time movie sequences.... and not much else. ARR on the other hand, uses a completely new custom engine based on the same engine used with FFXV (aka Luminous). It's not the same as FFXV's engine but shares components.

ARR does use equipment and character model designs from 1.0, but again these have been remodeled for the new engine (for instance there was the infamous butt window for miqo'te tails WHM AF1's body piece had in 1.0, which doesn't exist in ARR at all).

It 'only' took them a year and a half to make ARR because the groundwork for design had already been done, namely planning, storyline, character designs etc, and 1.0 served as a test bed in that time for new ideas and concepts that may or may not be used in ARR. There was some corner-cutting though, with how the game was ultimately designed ended up being like a closed system whose basic components are difficult to expand or modify (item ID/appearence being an example of that), but that has nothing to do with 1.0 'code' at all and was simply a symptom of SE being more concerned with ensuring the base game was at least stable and ran properly, at the expense of future proofing it.