And now for Part 2...

FFIX - I honestly only wish that Freya was expanded on, her story is actually really interesting but's shes treated as such an afterthought in the game that it's kind of cruel. Other than that, maybe spend more time really exploring Terra. Though it gets better expansion than IV's Lunarians they still could have done more to really explore them, I kind of feel IX sort of info dumps and runs about them.

FFX - As many people know, I have some issues with FFX's story, but to keep this inline with the theme of the thread my choices would be Lulu's character development because she honestly has the most interesting backstory of the bunch and yet the game buries it under optional stuff. I've got listen to Wakka whine about his dead brother or Tidus and Yuna bemoaning living up to their parents legacy but the one cast member who has some legitimate baggage is the one who shuts up and only gives the most basic of details about it. My other option is the very nature of the drama the story could really have. I hate to keep bringing this game up, but I am Setsuna handled the overall feeling of sorrow that such a story should bring way better. It would have been more interesting to have Tidus understand from the get go about the Pilgrimage rather than the bumbling hiding and cheap shock value it brought. Hell it would have given Yuna a better opportunity to shine as well. Being up front about the journey would have made the story more interesting. The battle system was also a missed opportunity and should have been built around controlling turn order better. Something like Xenosaga's boost mechanics or Bravery Default's mechanics would have really made that gameplay sing. The Sphere Grid should have also been less hand holding.

FFXII - The Occurians, I don't really know what it is about Square and having ancient possibly alien civilization controlling the main conflict from behind the scenes but three for three they tend to downplay them way too much and sadly, the Occurians might be the worst example. My next choices are the Judges themselves, considering how much they play into the marketing, it's a shame only a handful of them get any real characterization to them and they are one of the more interesting elements about Archades.

FFXIII - Oiy... where to begin? Maybe the idea of the relationship between Humans and fal'Cie? I mean it just doesn't feel like a world where they've lived side by side. I mean you would think that for a society that was easily brainwashed into thinking everything from Pulse was toxic and evil that Sahz wouldn't really freak out about his son becoming a l'Cie. The concept of being a l'Cie is also pretty one-sided argument with everyone treating it as awful when frankly I don't feel the rules are that bad with the exception that the fal'Cie don't give you direct orders for some reason, thus increasing your likelihood of turning into a Cieth. It This segues into the idea that the puppet government and brainwashed sheep of Coccon is another plot thread the game hints at going somewhere with it and never really did. Also Cid's resistance is pretty one note and self contained to just his story and has no impact on anything, that was wasted opportunity there as well. Also the supporting villains were underplayed despite both being more interesting than the actual villains which is a shame. I'll also second the fact the game had several moments of interesting drama only to cop out at the last minute. The battle system also needed more to it. The concept is interesting but it would have been cooler if enemies worked more like the Eidolons and different job roles were needed to break the gauge instead of just focusing all of it on Ravager and Commando. The Crystarium would have been more interesting if the job roles had more statistical focus on you were limited more on which ones to raise, which would have created more of a real customization experience. The weapon crafting had potential, if only they had introduced it earlier, changed the leveling mechanics to something less tedious, and focused more on special armor bonus sets like we see in Dissidia and Suikoden IV, we could have a real nice system going for it.

FFXIV - You made a new MMO based on FF and instead of either coming up with original races or utilizing all of the races seen so far in the franchise as a whole like Moogles, Bangaa, and Ronso; you instead decided to just revamp the XI races?

FFXV - Kingsglaive should have been in the game proper as a playable experience. Especially if Lunafreya and Regis were the playable characters to follow. Not only could it have been a fun taste of power sequence but it would have given both of them much needed screen time and characterization. The story needed to play up the King's Tombs questline, maybe get more history about the previous kings and tie it into the world better. The timeframe between Chapter 13 and the final story chapter should have been Noctis being challenged by the former kings and earning the right to be the chosen one. Most of the villains are poorly utilized that are not named Ardyn. We should have had a chance to really explore Tenebrae considering how often it's talked about in all of the XV media. The mariachi outfit should have been available for the whole party, including guest party members and you should have changed their weapons to instruments, I want my smurfing Desperado parody.

FFTactics - Honestly, the actual War of the Lions is way more interesting than the Lucavi plotline, I would have loved to have more emphasis be placed on that part of the narrative. I also feel like most of the story characters should have had a few more moments to shine in the plot after they join. Also the true nature of the Zodiac stones are hinted at being different than we thought but the game never explores it sadly.

Tactics Advance - I feel like the story/special characters could have all been better utilized. They're too restrictive at times and too narrow in focus. I get that they were trying to avoid the complaints of how broken the ones in FFTactics were, but I felt the game went a bit too far. Also, why isn't Donad and Mewt playable? The post game scenario makes no sense to begin with based on the actual ending, so I don't see why we couldn't have made them playable in there as well.

Tactics A2 - To be frank, many of the larger side story missions like the Four Lords or Frimelda's questline are better stories than the actual main plot. I would have gone with those instead. There are some cool scenarios in this game, just not the main one.