I've noticed that Kingdom Hearts has introduced concepts, but they never went anywhere outside of the games they appeared in. Like the idea of scents in CoM. They could reintroduce it in KH3. Have scenes where Riku comments on how Ansem smells like Terra, or how Roxas and Xion smell like Sora.

Now this one is one of my biggest pet peeves. In KH1 hearts looked like hearts. Now the sphere's of light were okay for the PoH (it gave the idea that their hearts were made of pure light). But in the other games, all hearts (aside from the ones that come out of emblem heartless) are sphere's of light. C'mon Xehanort and Braigs hearts shouldn't look the same as the PoH's.

I'm sure I've missed some, but you guys should get the idea. So do you think they should bring these things back, or just forget about them all together?

That flippin', half-assed, psychic connection that Kairi and Roxas had once in KH2 but was never brought up again or properly explained. They just said "lol, because hearts!" and left it at that. There are so many unanswered questions about how it works and the possibilities; it can be an interesting concept and tool if fleshed out right. But then again it has the potential to be really hammy imo. Regardless, it's something they brought up and just left dangling. At least give a reason for it not being a relevant anymore. :1

Having story aspects like the scents or the talking through the mind thing should make more appearances in the series, but gameplay wise, I like the way their doing it. The Action Menu was unique to KH1 and KH2, command melding and having 3 different stories was unique to KHBBS, and Dream Eaters and Flowmotion in KH3D. Having new gameplay aspects in every game gives every entry in the series it's own identity which I love.

Sora and Kairi's hearts being connected, and why that's important. (If it is anymore. Now that we know Sora can connect with anyone...)

And agreeing with Balthier, I wouldn't mind more info on the communication stuff. After all, Terra communicated with Aqua telepathically in the Final Episode of BbS, so it wasn't just Roxas, Kairi, and Sora who did it. They could also use things like the Star Shards more. I'm just sick of the "What Happened to the Mouse?" trope being so common in KH. They could also stick to the "Chekhov's Gun" trope better.

And with that, as TV Tropes said, I want to know what the heck that letter Pluto had said. There are also things like the Keyblade of People's Hearts, the voice that Sora always hears, etc. that could come back to the series.

I finally want to know what the heck Nami is. Somehow, I don't think we'll ever find that out:(

Also, I want them to explain in KHIII why it's seemingly odd for Kairi to be a PoH and one of the Seven Lights.

The hearts are still shaped like hearts when you destroy a heartless in all the games they appear in actually.

..The only thing I wanna revisit is the original command menu and MP. I like the deck command menu, but I'm just kinda over it lol

Roxas wrote:
..The only thing I wanna revisit is the original command menu and MP. I like the deck command menu, but I'm just kinda over it lol

Yes, yes! This. The original command deck menu was awesome, but I'm only over it because we have a new feature.