I'm not talking about a pitch, designs for FF7 were made, entire characters were cut and moved to other FFs, the story had multiple revisions and there was far more change from the old FF7 to the final FF7, especially narrative and character wise than there was for anything from Versus to XV. Most of the "unused" Versus shit still left in the game is just leftover texture or asset data from the Ebony build because it was made in Ebony before it was ported over to Luminous, as Aramaki stated they merged Ebony into Luminous when they migrated to the engine, the 2010/2011 Versus stuff was made in Ebony as was the 2012/2013 XV prototype build prior to them starting to move to Luminous around July 2013.
https://andriasang.com/con11g/ffvii15/
There is more change there in that sentence alone about what Aerith and Sephiroth's relationship was stated to be, than there even was for changes from what we knew of Stella to Luna for example. Aerith went from being Sephiroth's sister to later being changed so that Sephiroth was her first love, to later dropping that entirely and the character of Zack created to be her first love instead, that's three completely different shifts in what would be a character dynamic and important relationship for who was at the time one of the only 3 party members in the entire game.
What did we know about Stella? She was a noble women from Tenebrae, she's a Nox Fleuret, she wore white, had blonde hair, Nomura only ever described her as being "someone nice who sticks to her beliefs", Nomura in 2008 stated that the first time Noctis and Stella ever met was the at the peace treaty party, she has a rapier and stood in a street once opposed to Noctis, she mentions she had a near death experience as a child in the 2009 trailer, and then in the 2011 trailer that she wants to know if there is a reason for why she can see the light. Fast forward to 2013 and suddenly Stella is now childhood friends with Noctis like Luna is, and most things regarding Stella already also apply to Luna too anyway including her child design, and Luna herself just being modified from 2013 Stella's design.
That's literally it. Like not even Ravus/Lupus being Stella's brother was even confirmed or suggested to have been a thing for Stella until Ferrari's storyboards from May 2013 surfaced in Mid 2017 showed them interacting, and even then just months prior to the games launch it wasn't even widely assumed that Ravus aka the white hooded man at the time would have been her brother until his name was confirmed as a Nox Fleuret in mid 2016, which is all the same as him being Luna's brother anyway, and in fact Ravus/Lupus whatever being Stella's brother prior to her becoming Luna only made it seem like there was actually less change than we originally assumed there was. Whatever Ravus's original name was doesn't really matter anyway either because we never knew he had a different name until after his first proper name reveal, same with Iris and her original name. Even Barret was originally named "Blow" in early FF7 development, and Cloud looks about as different if not even moreso from his original design to final design, than whatever change Stella to Luna's design went through.
And things get even more weird for FF7 early development, you read earlier above how Nomura stated Sephiroth and Aerith were at one point siblings, however while the "character" we know now as Aerith originally existed as Sephiroth's sister, her original design looked like an early Tifa design and her name was actually listed as Tifa at the time too, as you can see the link here between Sephiroth and the character named "ティファ/Tifa" says "きょうだい/Kyoudai" between them which means siblings, and Barret's name is stated as ”ブロウ/Blow".
Also the characters on the bottom right has the bald one in the middle listed as "レノ/Reno" and the guy with the eyepatch as "ルード/Rude".
We know for a fact that Cloud, Barret and Aerith were the 3 party members first created.
https://thelifestream.net/lifestrea...o-13-of-the-ffvii-10th-anniversary-ultimania/
And as stated above we know for a fact that Aerith and Sephiroth were stated to originally be siblings which would later also be reflected in the characters hair bangs, yet here Barret is listed as "Blow" and the character listed as being siblings with Sephiroth is named "Tifa" and looks like an early design of Tifa, and Sephiroth looks like an early design of Vincent, so the only way this character named Tifa who looks different to Aerith's final design could be Sephiroth's sibling whom also looks different to his final design is if the character listed as Tifa here was actually the character of Aerith just prior to her name and design were finalized as Aerith and her design becoming the design we know.
What this actually would mean is that the character we know as Aerith was originally named Tifa and looked more like an early Tifa design, prior to them creating the "actual Tifa" character that we know now too, as they stated they only created Tifa after they had created Barret, Aerith and Cloud, so sometime after this stage in FF7s development the character designs changed and Aerith then gained her current design with the bangs and Sephiroth also had his design changed to have similar bangs, then sometime more after that they were no longer siblings and the actual Tifa character we know was created, since this early dev chart implies the name "Tifa" had been there since early on it would imply they just reused that name for the new character they created named Tifa later on during FF7's development.
Honestly compared to this whatever changes from Stella to Luna happened feel minuscule in comparison.